My Hearing Aids

I have two Phonak Sky Marvel hearing aids, these hearing aids support Bluetooth for audio streaming and BLE for connecting to an app.
Initially, I was excited to receive this since the app allowed you to tweak options for the hearing aids, unfortunately, it seemed my hearing aids were considered “children’s hearing aids” by the manufacturer, and as such only allowed you to use the “junior” Phonak app.

Unlike the normal Phonak app, this reduced feature-set version did not allow you to actually alter the options of the program, providing limited options for selecting a premade program and adjusting volume.

where is my equalizer phonak???

where is my equalizer phonak???

The Regular App

Such controls!

Such controls!

The regular app is significantly more capable, allowing for more powerful customizations, such as via the equalizer.
Unfortunately, when trying to connect it to my Hearing Aids, it marks them as “incompatible”.
I did have a suspicion, however, that this was moreso due to a software lock rather than the Hearing Aids actually being incapable of these program adjustments

Reverse Engineering Both Apps

When attempting to connect my hearing aids to the standard app, the following error presented itself:

18:23

83

Searching...

Looking for hearing aids

DEVICES

INCOMPATIBLE HEARING AIDS

These hearing aids are not supported by myPhonak. Please contact your hearing care professional.

CLOSE



As such I started by opening the apk in `jadx-gui` and searching for the string:

com.sonova.phonak.dsapp.apk - jadx-gui

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Resources
resources.arsc
res
values
  • arrays.xml
  • attrs.xml
  • bools.xml
  • colors.xml
  • dimens.xml
  • drawables.xml
  • integers.xml
  • plurals.xml
  • strings.xml
  • styles.xml
res/values/strings.xml
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    <string name="searching_alert_elr_button_download">Download Easy Line</string>
    <string name="searching_alert_elr_message_android">This hearing aid is not supported by myPhonak. Please visit Google Play Store and download the Easy Line Remote app that is compatible with your devices.</string>
    <string name="searching_alert_elr_title">Incompatible hearing aid</string>
    <string name="searching_alert_hinotfitted_message">These hearing aids cannot be paired with the myPhonak app because they have not been fitted. Please contact your hearing care professional.</string>
    <string name="searching_alert_notfittedhi_bottombutton">Close</string>
    <string name="searching_alert_notfittedhi_message">These hearing aids cannot be paired with the myPhonak app because they have not been fitted. Please contact your hearing care professional.</string>
    <string name="searching_alert_notfittedhi_title">Hearing aids not fitted</string>
    <string name="searching_detailtext">Looking for hearing aids</string>
    <string name="searching_device_incompatible_bottombutton">Close</string>
    <string name="searching_device_incompatible_detailtext">These hearing aids are not supported by myPhonak. Please contact your hearing care professional.</string>
    <string name="searching_device_incompatible_text">These hearing aids are not supported by myPhonak. Please contact your hearing care professional.</string>
    <string name="searching_device_incompatible_title">Incompatible hearing aids</string>
    <string name="searching_device_searching">Searching…</string>
    <string name="searching_device_searching2">Searching for second device...</string>
    <string name="searching_highlight_ha_detailtext">Pushing the button on the hearing aid will highlight it in the list.</string>
    <string name="searching_highlight_ha_title">Highlight your device</string>


Looking for usage of the string led me to the code for the dialog itself:

com.sonova.phonak.dsapp.apk - jadx-gui

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Source code
app.myphonak
android
ui
pairing
  • DiscoverHiFragment
DiscoverHiFragment
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    @Override // app.myphonak.android.bluetooth.BluetoothDialogNavigation
    public void onBluetoothEnablingDenied() {
        FragmentExtensionsKt.navigate$default(this, DiscoverHiFragmentDirections.INSTANCE.actionOpenPairingIntro(), (NavOptions) null, 2, (Object) null);
    }

    public final void showIncompatibleHiDialog() {
        FragmentExtensionsKt.showMaterialDialog$default(this, Integer.valueOf(R.string.searching_device_incompatible_title), Integer.valueOf(R.string.searching_device_incompatible_text), R.string.searching_device_incompatible_bottombutton, new DialogInterface.OnClickListener() { // from class: app.myphonak.android.ui.pairing.discoverHi.DiscoverHiFragment$$ExternalSyntheticLambda4
            @Override // android.content.DialogInterface.OnClickListener
            public final void onClick(DialogInterface dialogInterface, int i) {
                DiscoverHiFragment.showIncompatibleHiDialog$lambda$10(dialogInterface, i);
            }
        }, null, null, null, null, false, null, false, 2032, null);
    }

    /* JADX INFO: Access modifiers changed from: private */
    public static final void showIncompatibleHiDialog$lambda$10(DialogInterface dialogInterface, int i) {
        if (dialogInterface != null) {
            dialogInterface.dismiss();
        }
    }

    private final void showNonFittedHiDialog() {
        FragmentExtensionsKt.showMaterialDialog$default(this, Integer.valueOf(R.string.searching_alert_notfittedhi_title), Integer.valueOf(R.string.searching_alert_hinotfitted_message), R.string.searching_alert_notfittedhi_bottombutton, new DialogInterface.OnClickListener() { // from class: app.myphonak.android.ui.pairing.discoverHi.DiscoverHiFragment$$ExternalSyntheticLambda2
            @Override // android.content.DialogInterface.OnClickListener
            public final void onClick(DialogInterface dialogInterface, int i) {
                DiscoverHiFragment.showNonFittedHiDialog$lambda$11(dialogInterface, i);
            }
        }, null, null, null, null, false, null, false, 2032, null);
    }


Going deeper, there was an event that would trigger the dialog showing:

com.sonova.phonak.dsapp.apk - jadx-gui

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Source code
app.myphonak
android
ui
pairing
  • DiscoverHiFragment
DiscoverHiFragment
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    ClickLiveEvent incompatibleHiClickedLE = getViewModel().getIncompatibleHiClickedLE();
    LifecycleOwner viewLifecycleOwner4 = getViewLifecycleOwner();
    Intrinsics.checkNotNullExpressionValue(viewLifecycleOwner4, "getViewLifecycleOwner(...)");
    incompatibleHiClickedLE.observe(viewLifecycleOwner4, new DiscoverHiFragment$sam$androidx_lifecycle_Observer$0(new Function1() { // from class: app.myphonak.android.ui.pairing.discoverHi.DiscoverHiFragment$$ExternalSyntheticLambda8
        @Override // kotlin.jvm.functions.Function1
        public final Object invoke(Object obj) {
            Unit configureObservers$lambda$7;
            configureObservers$lambda$7 = DiscoverHiFragment.configureObservers$lambda$7(DiscoverHiFragment.this, (Unit) obj);
            return configureObservers$lambda$7;
        }
    }));


And checking what triggered the event led me to this:

com.sonova.phonak.dsapp.apk - jadx-gui

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Source code
app.myphonak
android
ui
pairing
  • DiscoverHiViewModel
DiscoverHiViewModel
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public final void groupClicked(DiscoveredHiGroup discoveredHiGroup) {
    Intrinsics.checkNotNullParameter(discoveredHiGroup, "discoveredHiGroup");
    if (discoveredHiGroup.getCanPairDiscoveredDevice()) {
        if (discoveredHiGroup.isCompatible()) {
            this.navigateToPairingLE.setValue(discoveredHiGroup);
            return;
        }
        if (discoveredHiGroup.isNotSupportedSpecificHi()) {
            this.specificHiNotSupportedClickedLE.fireEvent();
            return;
        }
        if (!discoveredHiGroup.isWhitelisted()) {
            this.incompatibleHiClickedLE.fireEvent();
            return;
        }
        if (!discoveredHiGroup.getAreAllHisFitted()) {
            this.nonFittedHiClickedLE.fireEvent();
        } else if (discoveredHiGroup.isBimodal()) {
            this.bimodalHiClickedLE.fireEvent();
        } else {
            this.incompatibleHiClickedLE.fireEvent();
        }
    }
}

discoveredHiGroup.isWhitelisted()

bingo!

Finding the whitelist

Diving into the isWhitelisted function, I was eventually able to find a HiType object which had a list of serials(?) and another object linking the HiType objects to model names and images:

com.sonova.phonak.dsapp.apk - jadx-gui

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Source code
app.myphonak
domain
models
  • HiType
HiType
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package app.myphonak.domain.models;

import com.sonova.health.device.DeviceManager;
import dagger.hilt.processor.internal.Processors;
import java.util.Iterator;
import kotlin.Metadata;
import kotlin.enums.EnumEntries;
import kotlin.enums.EnumEntriesKt;
import kotlin.jvm.internal.DefaultConstructorMarker;
import kotlin.jvm.internal.Intrinsics;
import org.apache.http.cookie.ClientCookie;

/* JADX WARN: Failed to restore enum class, 'enum' modifier and super class removed */
/* JADX WARN: Unknown enum class pattern. Please report as an issue! */
/* compiled from: HiType.kt */
@Metadata(d1 = {"\u0000\r\n\u0002\u0018\u0002\n\u0002\u0010\u0010\n\u0003\b\u009c\u0001\b\u0086\u0081\u0002\u0018\u0000 \u009c\u00012\b\u0012\u0004\u0012\u00020\u00000\u0001:\u0002\u009c\u0001B\t\b\u0002¢\u0006\u0004\b\u0002\u0010\u0003j\u0002\b\u0004j\u0002\b\u0005j\u0002\b\u0006j\u0002\b\u0007j\u0002\b\bj\u0002\b\tj\u0002\b\nj\u0002\b\u000bj\u0002\b\fj\u0002\b\rj\u0002\b\u000ej\u0002\b\u000fj\u0002\b\u0010j\u0002\b\u0011j\u0002\b\u0012j\u0002\b\u0013j\u0002\b\u0014j\u0002\b\u0015j\u0002\b\u0016j\u0002\b\u0017j\u0002\b\u0018j\u0002\b\u0019j\u0002\b\u001aj\u0002\b\u001bj\u0002\b\u001cj\u0002\b\u001dj\u0002\b\u001ej\u0002\b\u001fj\u0002\b j\u0002\b!j\u0002\b\"j\u0002\b#j\u0002\b$j\u0002\b%j\u0002\b&j\u0002\b'j\u0002\b(j\u0002\b)j\u0002\b*j\u0002\b+j\u0002\b,j\u0002\b-j\u0002\b.j\u0002\b/j\u0002\b0j\u0002\b1j\u0002\b2j\u0002\b3j\u0002\b4j\u0002\b5j\u0002\b6j\u0002\b7j\u0002\b8j\u0002\b9j\u0002\b:j\u0002\b;j\u0002\b<j\u0002\b=j\u0002\b>j\u0002\b?j\u0002\b@j\u0002\bAj\u0002\bBj\u0002\bCj\u0002\bDj\u0002\bEj\u0002\bFj\u0002\bGj\u0002\bHj\u0002\bIj\u0002\bJj\u0002\bKj\u0002\bLj\u0002\bMj\u0002\bNj\u0002\bOj\u0002\bPj\u0002\bQj\u0002\bRj\u0002\bSj\u0002\bTj\u0002\bUj\u0002\bVj\u0002\bWj\u0002\bXj\u0002\bYj\u0002\bZj\u0002\b[j\u0002\b\\j\u0002\b]j\u0002\b^j\u0002\b_j\u0002\b`j\u0002\baj\u0002\bbj\u0002\bcj\u0002\bdj\u0002\bej\u0002\bfj\u0002\bgj\u0002\bhj\u0002\bij\u0002\bjj\u0002\bkj\u0002\blj\u0002\bmj\u0002\bnj\u0002\boj\u0002\bpj\u0002\bqj\u0002\brj\u0002\bsj\u0002\btj\u0002\buj\u0002\bvj\u0002\bwj\u0002\bxj\u0002\byj\u0002\bzj\u0002\b{j\u0002\b|j\u0002\b}j\u0002\b~j\u0002\b\u007fj\u0003\b\u0080\u0001j\u0003\b\u0081\u0001j\u0003\b\u0082\u0001j\u0003\b\u0083\u0001j\u0003\b\u0084\u0001j\u0003\b\u0085\u0001j\u0003\b\u0086\u0001j\u0003\b\u0087\u0001j\u0003\b\u0088\u0001j\u0003\b\u0089\u0001j\u0003\b\u008a\u0001j\u0003\b\u008b\u0001j\u0003\b\u008c\u0001j\u0003\b\u008d\u0001j\u0003\b\u008e\u0001j\u0003\b\u008f\u0001j\u0003\b\u0090\u0001j\u0003\b\u0091\u0001j\u0003\b\u0092\u0001j\u0003\b\u0093\u0001j\u0003\b\u0094\u0001j\u0003\b\u0095\u0001j\u0003\b\u0096\u0001j\u0003\b\u0097\u0001j\u0003\b\u0098\u0001j\u0003\b\u0099\u0001j\u0003\b\u009a\u0001j\u0003\b\u009b\u0001¨\u0006\u009d\u0001"}, d2 = {"Lapp/myphonak/domain/models/HiType;", "", Processors.CONSTRUCTOR_NAME, "(Ljava/lang/String;I)V", DeviceManager.UNKNOWN_DEVICE, "067-1602", "067-1603", "067-1240", "067-1241", "067-1242", "067-1243", "067-1300", "067-1301", "067-1302", "067-1303", "067-1304", "067-1305", "067-1306", "067-1307", "067-1308", "067-1309", "067-1310", "067-1311", "067-1312", "067-1313", "067-1314", "067-1315", "067-1316", "067-1317", "067-1318", "067-1319", "067-1320", "067-1322", "067-1323", "067-1325", "067-1326", "067-1328", "067-1329", "067-1331", "067-1332", "067-1333", "067-1334", "067-1335", "067-1337", "067-1338", "067-1357", "067-1359", "067-1360", "067-1361", "067-1400", "067-1434", "067-1435", "067-1436", "067-1437", "067-1438", "067-1439", "067-1440", "067-1441", "067-1442", "067-1443", "067-1444", "067-1445", "067-1446", "067-1447", "067-1448", "067-1449", "067-1450", "067-1451", "067-1452", "067-1453", "067-1454", "067-1455", "067-1456", "067-1457", "067-1458", "067-1459", "067-1460", "067-1461", "067-1462", "067-1463", "067-1466", "067-1467", "067-1468", "067-1469", "067-1470", "067-1471", "067-1500", "067-1501", "067-1502", "067-1503", "067-1504", "067-1505", "067-1506", "067-1507", "067-1508", "067-1509", "067-1510", "067-1511", "067-1512", "067-1515", "067-1516", "068-1310", "068-1311", "068-1312", "068-1313", "068-1314", "068-1430", "068-1431", "068-1432", "068-1433", "067-1473", "067-1474", "067-1475", "067-1476", "067-1518", "067-1519", "067-1520", "067-1521", "067-1522", "067-1523", "067-1524", "067-1525", "067-1526", "067-1527", "067-1528", "067-1529", "067-1554", "067-1555", "067-1556", "067-1557", "067-1550", "067-1551", "067-1552", "067-1553", "067-1558", "067-1559", "067-1560", "067-1561", "067-1562", "067-1563", "067-1564", "067-1565", "067-1570", "067-1572", "067-1574", "067-1576", "067-1604", "067-1605", "067-1606", "067-1607", "067-1608", "068-1500", "068-1501", "068-1502", "068-1503", "067-1566", "Companion", ClientCookie.DOMAIN_ATTR}, k = 1, mv = {2, 0, 0}, xi = 48)
/* loaded from: classes4.dex */
public final class HiType {
    private static final /* synthetic */ EnumEntries $ENTRIES;
    private static final /* synthetic */ HiType[] $VALUES;

    /* renamed from: Companion, reason: from kotlin metadata */
    public static final Companion INSTANCE;
    public static final HiType UNKNOWN = new HiType(DeviceManager.UNKNOWN_DEVICE, 0);

    /* renamed from: 067-1602, reason: not valid java name */
    public static final HiType f3640671602 = new HiType("067-1602", 1);

    /* renamed from: 067-1603, reason: not valid java name */
    public static final HiType f3650671603 = new HiType("067-1603", 2);

    /* renamed from: 067-1240, reason: not valid java name */
    public static final HiType f2330671240 = new HiType("067-1240", 3);

    /* renamed from: 067-1241, reason: not valid java name */
    public static final HiType f2340671241 = new HiType("067-1241", 4);

    /* renamed from: 067-1242, reason: not valid java name */
    public static final HiType f2350671242 = new HiType("067-1242", 5);

    /* renamed from: 067-1243, reason: not valid java name */
    public static final HiType f2360671243 = new HiType("067-1243", 6);

    /* renamed from: 067-1300, reason: not valid java name */
    public static final HiType f2370671300 = new HiType("067-1300", 7);

    /* renamed from: 067-1301, reason: not valid java name */
    public static final HiType f2380671301 = new HiType("067-1301", 8);

    /* renamed from: 067-1302, reason: not valid java name */
    public static final HiType f2390671302 = new HiType("067-1302", 9);

    /* renamed from: 067-1303, reason: not valid java name */
    public static final HiType f2400671303 = new HiType("067-1303", 10);

    /* renamed from: 067-1304, reason: not valid java name */
    public static final HiType f2410671304 = new HiType("067-1304", 11);

    /* renamed from: 067-1305, reason: not valid java name */
    public static final HiType f2420671305 = new HiType("067-1305", 12);

    /* renamed from: 067-1306, reason: not valid java name */
    public static final HiType f2430671306 = new HiType("067-1306", 13);

    /* renamed from: 067-1307, reason: not valid java name */
    public static final HiType f2440671307 = new HiType("067-1307", 14);

    /* renamed from: 067-1308, reason: not valid java name */
    public static final HiType f2450671308 = new HiType("067-1308", 15);

    /* renamed from: 067-1309, reason: not valid java name */
    public static final HiType f2460671309 = new HiType("067-1309", 16);

    /* renamed from: 067-1310, reason: not valid java name */
    public static final HiType f2470671310 = new HiType("067-1310", 17);

    /* renamed from: 067-1311, reason: not valid java name */
    public static final HiType f2480671311 = new HiType("067-1311", 18);

    /* renamed from: 067-1312, reason: not valid java name */
    public static final HiType f2490671312 = new HiType("067-1312", 19);

    /* renamed from: 067-1313, reason: not valid java name */
    public static final HiType f2500671313 = new HiType("067-1313", 20);

    /* renamed from: 067-1314, reason: not valid java name */
    public static final HiType f2510671314 = new HiType("067-1314", 21);

    /* renamed from: 067-1315, reason: not valid java name */
    public static final HiType f2520671315 = new HiType("067-1315", 22);

    /* renamed from: 067-1316, reason: not valid java name */
    public static final HiType f2530671316 = new HiType("067-1316", 23);

    /* renamed from: 067-1317, reason: not valid java name */
    public static final HiType f2540671317 = new HiType("067-1317", 24);

    /* renamed from: 067-1318, reason: not valid java name */
    public static final HiType f2550671318 = new HiType("067-1318", 25);

    /* renamed from: 067-1319, reason: not valid java name */
    public static final HiType f2560671319 = new HiType("067-1319", 26);

    /* renamed from: 067-1320, reason: not valid java name */
    public static final HiType f2570671320 = new HiType("067-1320", 27);

    /* renamed from: 067-1322, reason: not valid java name */
    public static final HiType f2580671322 = new HiType("067-1322", 28);

    /* renamed from: 067-1323, reason: not valid java name */
    public static final HiType f2590671323 = new HiType("067-1323", 29);

    /* renamed from: 067-1325, reason: not valid java name */
    public static final HiType f2600671325 = new HiType("067-1325", 30);

    /* renamed from: 067-1326, reason: not valid java name */
    public static final HiType f2610671326 = new HiType("067-1326", 31);

    /* renamed from: 067-1328, reason: not valid java name */
    public static final HiType f2620671328 = new HiType("067-1328", 32);

    /* renamed from: 067-1329, reason: not valid java name */
    public static final HiType f2630671329 = new HiType("067-1329", 33);

    /* renamed from: 067-1331, reason: not valid java name */
    public static final HiType f2640671331 = new HiType("067-1331", 34);

    /* renamed from: 067-1332, reason: not valid java name */
    public static final HiType f2650671332 = new HiType("067-1332", 35);

    /* renamed from: 067-1333, reason: not valid java name */
    public static final HiType f2660671333 = new HiType("067-1333", 36);

    /* renamed from: 067-1334, reason: not valid java name */
    public static final HiType f2670671334 = new HiType("067-1334", 37);

    /* renamed from: 067-1335, reason: not valid java name */
    public static final HiType f2680671335 = new HiType("067-1335", 38);

    /* renamed from: 067-1337, reason: not valid java name */
    public static final HiType f2690671337 = new HiType("067-1337", 39);

    /* renamed from: 067-1338, reason: not valid java name */
    public static final HiType f2700671338 = new HiType("067-1338", 40);

    /* renamed from: 067-1357, reason: not valid java name */
    public static final HiType f2710671357 = new HiType("067-1357", 41);

    /* renamed from: 067-1359, reason: not valid java name */
    public static final HiType f2720671359 = new HiType("067-1359", 42);

    /* renamed from: 067-1360, reason: not valid java name */
    public static final HiType f2730671360 = new HiType("067-1360", 43);

    /* renamed from: 067-1361, reason: not valid java name */
    public static final HiType f2740671361 = new HiType("067-1361", 44);

    /* renamed from: 067-1400, reason: not valid java name */
    public static final HiType f2750671400 = new HiType("067-1400", 45);

    /* renamed from: 067-1434, reason: not valid java name */
    public static final HiType f2760671434 = new HiType("067-1434", 46);

    /* renamed from: 067-1435, reason: not valid java name */
    public static final HiType f2770671435 = new HiType("067-1435", 47);

    /* renamed from: 067-1436, reason: not valid java name */
    public static final HiType f2780671436 = new HiType("067-1436", 48);

    /* renamed from: 067-1437, reason: not valid java name */
    public static final HiType f2790671437 = new HiType("067-1437", 49);

    /* renamed from: 067-1438, reason: not valid java name */
    public static final HiType f2800671438 = new HiType("067-1438", 50);

    /* renamed from: 067-1439, reason: not valid java name */
    public static final HiType f2810671439 = new HiType("067-1439", 51);

    /* renamed from: 067-1440, reason: not valid java name */
    public static final HiType f2820671440 = new HiType("067-1440", 52);

    /* renamed from: 067-1441, reason: not valid java name */
    public static final HiType f2830671441 = new HiType("067-1441", 53);

    /* renamed from: 067-1442, reason: not valid java name */
    public static final HiType f2840671442 = new HiType("067-1442", 54);

    /* renamed from: 067-1443, reason: not valid java name */
    public static final HiType f2850671443 = new HiType("067-1443", 55);

    /* renamed from: 067-1444, reason: not valid java name */
    public static final HiType f2860671444 = new HiType("067-1444", 56);

    /* renamed from: 067-1445, reason: not valid java name */
    public static final HiType f2870671445 = new HiType("067-1445", 57);

    /* renamed from: 067-1446, reason: not valid java name */
    public static final HiType f2880671446 = new HiType("067-1446", 58);

    /* renamed from: 067-1447, reason: not valid java name */
    public static final HiType f2890671447 = new HiType("067-1447", 59);

    /* renamed from: 067-1448, reason: not valid java name */
    public static final HiType f2900671448 = new HiType("067-1448", 60);

    /* renamed from: 067-1449, reason: not valid java name */
    public static final HiType f2910671449 = new HiType("067-1449", 61);

    /* renamed from: 067-1450, reason: not valid java name */
    public static final HiType f2920671450 = new HiType("067-1450", 62);

    /* renamed from: 067-1451, reason: not valid java name */
    public static final HiType f2930671451 = new HiType("067-1451", 63);

    /* renamed from: 067-1452, reason: not valid java name */
    public static final HiType f2940671452 = new HiType("067-1452", 64);

    /* renamed from: 067-1453, reason: not valid java name */
    public static final HiType f2950671453 = new HiType("067-1453", 65);

    /* renamed from: 067-1454, reason: not valid java name */
    public static final HiType f2960671454 = new HiType("067-1454", 66);

    /* renamed from: 067-1455, reason: not valid java name */
    public static final HiType f2970671455 = new HiType("067-1455", 67);

    /* renamed from: 067-1456, reason: not valid java name */
    public static final HiType f2980671456 = new HiType("067-1456", 68);

    /* renamed from: 067-1457, reason: not valid java name */
    public static final HiType f2990671457 = new HiType("067-1457", 69);

    /* renamed from: 067-1458, reason: not valid java name */
    public static final HiType f3000671458 = new HiType("067-1458", 70);

    /* renamed from: 067-1459, reason: not valid java name */
    public static final HiType f3010671459 = new HiType("067-1459", 71);

    /* renamed from: 067-1460, reason: not valid java name */
    public static final HiType f3020671460 = new HiType("067-1460", 72);

    /* renamed from: 067-1461, reason: not valid java name */
    public static final HiType f3030671461 = new HiType("067-1461", 73);

    /* renamed from: 067-1462, reason: not valid java name */
    public static final HiType f3040671462 = new HiType("067-1462", 74);

    /* renamed from: 067-1463, reason: not valid java name */
    public static final HiType f3050671463 = new HiType("067-1463", 75);

    /* renamed from: 067-1466, reason: not valid java name */
    public static final HiType f3060671466 = new HiType("067-1466", 76);

    /* renamed from: 067-1467, reason: not valid java name */
    public static final HiType f3070671467 = new HiType("067-1467", 77);

    /* renamed from: 067-1468, reason: not valid java name */
    public static final HiType f3080671468 = new HiType("067-1468", 78);

    /* renamed from: 067-1469, reason: not valid java name */
    public static final HiType f3090671469 = new HiType("067-1469", 79);

    /* renamed from: 067-1470, reason: not valid java name */
    public static final HiType f3100671470 = new HiType("067-1470", 80);

    /* renamed from: 067-1471, reason: not valid java name */
    public static final HiType f3110671471 = new HiType("067-1471", 81);

    /* renamed from: 067-1500, reason: not valid java name */
    public static final HiType f3160671500 = new HiType("067-1500", 82);

    /* renamed from: 067-1501, reason: not valid java name */
    public static final HiType f3170671501 = new HiType("067-1501", 83);

    /* renamed from: 067-1502, reason: not valid java name */
    public static final HiType f3180671502 = new HiType("067-1502", 84);

    /* renamed from: 067-1503, reason: not valid java name */
    public static final HiType f3190671503 = new HiType("067-1503", 85);

    /* renamed from: 067-1504, reason: not valid java name */
    public static final HiType f3200671504 = new HiType("067-1504", 86);

    /* renamed from: 067-1505, reason: not valid java name */
    public static final HiType f3210671505 = new HiType("067-1505", 87);

    /* renamed from: 067-1506, reason: not valid java name */
    public static final HiType f3220671506 = new HiType("067-1506", 88);

    /* renamed from: 067-1507, reason: not valid java name */
    public static final HiType f3230671507 = new HiType("067-1507", 89);

    /* renamed from: 067-1508, reason: not valid java name */
    public static final HiType f3240671508 = new HiType("067-1508", 90);

    /* renamed from: 067-1509, reason: not valid java name */
    public static final HiType f3250671509 = new HiType("067-1509", 91);

    /* renamed from: 067-1510, reason: not valid java name */
    public static final HiType f3260671510 = new HiType("067-1510", 92);

    /* renamed from: 067-1511, reason: not valid java name */
    public static final HiType f3270671511 = new HiType("067-1511", 93);

    /* renamed from: 067-1512, reason: not valid java name */
    public static final HiType f3280671512 = new HiType("067-1512", 94);

    /* renamed from: 067-1515, reason: not valid java name */
    public static final HiType f3290671515 = new HiType("067-1515", 95);

    /* renamed from: 067-1516, reason: not valid java name */
    public static final HiType f3300671516 = new HiType("067-1516", 96);

    /* renamed from: 068-1310, reason: not valid java name */
    public static final HiType f3710681310 = new HiType("068-1310", 97);

    /* renamed from: 068-1311, reason: not valid java name */
    public static final HiType f3720681311 = new HiType("068-1311", 98);

    /* renamed from: 068-1312, reason: not valid java name */
    public static final HiType f3730681312 = new HiType("068-1312", 99);

    /* renamed from: 068-1313, reason: not valid java name */
    public static final HiType f3740681313 = new HiType("068-1313", 100);

    /* renamed from: 068-1314, reason: not valid java name */
    public static final HiType f3750681314 = new HiType("068-1314", 101);

    /* renamed from: 068-1430, reason: not valid java name */
    public static final HiType f3760681430 = new HiType("068-1430", 102);

    /* renamed from: 068-1431, reason: not valid java name */
    public static final HiType f3770681431 = new HiType("068-1431", 103);

    /* renamed from: 068-1432, reason: not valid java name */
    public static final HiType f3780681432 = new HiType("068-1432", 104);

    /* renamed from: 068-1433, reason: not valid java name */
    public static final HiType f3790681433 = new HiType("068-1433", 105);

    /* renamed from: 067-1473, reason: not valid java name */
    public static final HiType f3120671473 = new HiType("067-1473", 106);

    /* renamed from: 067-1474, reason: not valid java name */
    public static final HiType f3130671474 = new HiType("067-1474", 107);

    /* renamed from: 067-1475, reason: not valid java name */
    public static final HiType f3140671475 = new HiType("067-1475", 108);

    /* renamed from: 067-1476, reason: not valid java name */
    public static final HiType f3150671476 = new HiType("067-1476", 109);

    /* renamed from: 067-1518, reason: not valid java name */
    public static final HiType f3310671518 = new HiType("067-1518", 110);

    /* renamed from: 067-1519, reason: not valid java name */
    public static final HiType f3320671519 = new HiType("067-1519", 111);

    /* renamed from: 067-1520, reason: not valid java name */
    public static final HiType f3330671520 = new HiType("067-1520", 112);

    /* renamed from: 067-1521, reason: not valid java name */
    public static final HiType f3340671521 = new HiType("067-1521", 113);

    /* renamed from: 067-1522, reason: not valid java name */
    public static final HiType f3350671522 = new HiType("067-1522", 114);

    /* renamed from: 067-1523, reason: not valid java name */
    public static final HiType f3360671523 = new HiType("067-1523", 115);

    /* renamed from: 067-1524, reason: not valid java name */
    public static final HiType f3370671524 = new HiType("067-1524", 116);

    /* renamed from: 067-1525, reason: not valid java name */
    public static final HiType f3380671525 = new HiType("067-1525", 117);

    /* renamed from: 067-1526, reason: not valid java name */
    public static final HiType f3390671526 = new HiType("067-1526", 118);

    /* renamed from: 067-1527, reason: not valid java name */
    public static final HiType f3400671527 = new HiType("067-1527", 119);

    /* renamed from: 067-1528, reason: not valid java name */
    public static final HiType f3410671528 = new HiType("067-1528", 120);

    /* renamed from: 067-1529, reason: not valid java name */
    public static final HiType f3420671529 = new HiType("067-1529", 121);

    /* renamed from: 067-1554, reason: not valid java name */
    public static final HiType f3470671554 = new HiType("067-1554", 122);

    /* renamed from: 067-1555, reason: not valid java name */
    public static final HiType f3480671555 = new HiType("067-1555", 123);

    /* renamed from: 067-1556, reason: not valid java name */
    public static final HiType f3490671556 = new HiType("067-1556", 124);

    /* renamed from: 067-1557, reason: not valid java name */
    public static final HiType f3500671557 = new HiType("067-1557", 125);

    /* renamed from: 067-1550, reason: not valid java name */
    public static final HiType f3430671550 = new HiType("067-1550", 126);

    /* renamed from: 067-1551, reason: not valid java name */
    public static final HiType f3440671551 = new HiType("067-1551", 127);

    /* renamed from: 067-1552, reason: not valid java name */
    public static final HiType f3450671552 = new HiType("067-1552", 128);

    /* renamed from: 067-1553, reason: not valid java name */
    public static final HiType f3460671553 = new HiType("067-1553", 129);

    /* renamed from: 067-1558, reason: not valid java name */
    public static final HiType f3510671558 = new HiType("067-1558", 130);

    /* renamed from: 067-1559, reason: not valid java name */
    public static final HiType f3520671559 = new HiType("067-1559", 131);

    /* renamed from: 067-1560, reason: not valid java name */
    public static final HiType f3530671560 = new HiType("067-1560", 132);

    /* renamed from: 067-1561, reason: not valid java name */
    public static final HiType f3540671561 = new HiType("067-1561", 133);

    /* renamed from: 067-1562, reason: not valid java name */
    public static final HiType f3550671562 = new HiType("067-1562", 134);

    /* renamed from: 067-1563, reason: not valid java name */
    public static final HiType f3560671563 = new HiType("067-1563", 135);

    /* renamed from: 067-1564, reason: not valid java name */
    public static final HiType f3570671564 = new HiType("067-1564", 136);

    /* renamed from: 067-1565, reason: not valid java name */
    public static final HiType f3580671565 = new HiType("067-1565", 137);

    /* renamed from: 067-1570, reason: not valid java name */
    public static final HiType f3600671570 = new HiType("067-1570", 138);

    /* renamed from: 067-1572, reason: not valid java name */
    public static final HiType f3610671572 = new HiType("067-1572", 139);

    /* renamed from: 067-1574, reason: not valid java name */
    public static final HiType f3620671574 = new HiType("067-1574", 140);

    /* renamed from: 067-1576, reason: not valid java name */
    public static final HiType f3630671576 = new HiType("067-1576", 141);

    /* renamed from: 067-1604, reason: not valid java name */
    public static final HiType f3660671604 = new HiType("067-1604", 142);

    /* renamed from: 067-1605, reason: not valid java name */
    public static final HiType f3670671605 = new HiType("067-1605", 143);

    /* renamed from: 067-1606, reason: not valid java name */
    public static final HiType f3680671606 = new HiType("067-1606", 144);

    /* renamed from: 067-1607, reason: not valid java name */
    public static final HiType f3690671607 = new HiType("067-1607", 145);

    /* renamed from: 067-1608, reason: not valid java name */
    public static final HiType f3700671608 = new HiType("067-1608", 146);

    /* renamed from: 068-1500, reason: not valid java name */
    public static final HiType f3800681500 = new HiType("068-1500", 147);

    /* renamed from: 068-1501, reason: not valid java name */
    public static final HiType f3810681501 = new HiType("068-1501", 148);

    /* renamed from: 068-1502, reason: not valid java name */
    public static final HiType f3820681502 = new HiType("068-1502", 149);

    /* renamed from: 068-1503, reason: not valid java name */
    public static final HiType f3830681503 = new HiType("068-1503", 150);

    /* renamed from: 067-1566, reason: not valid java name */
    public static final HiType f3590671566 = new HiType("067-1566", 151);

    private static final /* synthetic */ HiType[] $values() {
        return new HiType[]{UNKNOWN, f3640671602, f3650671603, f2330671240, f2340671241, f2350671242, f2360671243, f2370671300, f2380671301, f2390671302, f2400671303, f2410671304, f2420671305, f2430671306, f2440671307, f2450671308, f2460671309, f2470671310, f2480671311, f2490671312, f2500671313, f2510671314, f2520671315, f2530671316, f2540671317, f2550671318, f2560671319, f2570671320, f2580671322, f2590671323, f2600671325, f2610671326, f2620671328, f2630671329, f2640671331, f2650671332, f2660671333, f2670671334, f2680671335, f2690671337, f2700671338, f2710671357, f2720671359, f2730671360, f2740671361, f2750671400, f2760671434, f2770671435, f2780671436, f2790671437, f2800671438, f2810671439, f2820671440, f2830671441, f2840671442, f2850671443, f2860671444, f2870671445, f2880671446, f2890671447, f2900671448, f2910671449, f2920671450, f2930671451, f2940671452, f2950671453, f2960671454, f2970671455, f2980671456, f2990671457, f3000671458, f3010671459, f3020671460, f3030671461, f3040671462, f3050671463, f3060671466, f3070671467, f3080671468, f3090671469, f3100671470, f3110671471, f3160671500, f3170671501, f3180671502, f3190671503, f3200671504, f3210671505, f3220671506, f3230671507, f3240671508, f3250671509, f3260671510, f3270671511, f3280671512, f3290671515, f3300671516, f3710681310, f3720681311, f3730681312, f3740681313, f3750681314, f3760681430, f3770681431, f3780681432, f3790681433, f3120671473, f3130671474, f3140671475, f3150671476, f3310671518, f3320671519, f3330671520, f3340671521, f3350671522, f3360671523, f3370671524, f3380671525, f3390671526, f3400671527, f3410671528, f3420671529, f3470671554, f3480671555, f3490671556, f3500671557, f3430671550, f3440671551, f3450671552, f3460671553, f3510671558, f3520671559, f3530671560, f3540671561, f3550671562, f3560671563, f3570671564, f3580671565, f3600671570, f3610671572, f3620671574, f3630671576, f3660671604, f3670671605, f3680671606, f3690671607, f3700671608, f3800681500, f3810681501, f3820681502, f3830681503, f3590671566};
    }

    public static EnumEntries<HiType> getEntries() {
        return $ENTRIES;
    }

    private HiType(String str, int i) {
    }

    static {
        HiType[] $values = $values();
        $VALUES = $values;
        $ENTRIES = EnumEntriesKt.enumEntries($values);
        INSTANCE = new Companion(null);
    }

    /* compiled from: HiType.kt */
    @Metadata(d1 = {"\u0000\u0018\n\u0002\u0018\u0002\n\u0002\u0010\u0000\n\u0002\b\u0003\n\u0002\u0018\u0002\n\u0000\n\u0002\u0010\u000e\n\u0000\b\u0086\u0003\u0018\u00002\u00020\u0001B\t\b\u0002¢\u0006\u0004\b\u0002\u0010\u0003J\u0011\u0010\u0004\u001a\u00020\u00052\u0006\u0010\u0006\u001a\u00020\u0007H\u0086\u0002¨\u0006\b"}, d2 = {"Lapp/myphonak/domain/models/HiType$Companion;", "", Processors.CONSTRUCTOR_NAME, "()V", "get", "Lapp/myphonak/domain/models/HiType;", "hiType", "", ClientCookie.DOMAIN_ATTR}, k = 1, mv = {2, 0, 0}, xi = 48)
    public static final class Companion {
        public /* synthetic */ Companion(DefaultConstructorMarker defaultConstructorMarker) {
            this();
        }

        private Companion() {
        }

        public final HiType get(String hiType) {
            Object obj;
            Intrinsics.checkNotNullParameter(hiType, "hiType");
            Iterator<E> it = HiType.getEntries().iterator();
            while (true) {
                if (!it.hasNext()) {
                    obj = null;
                    break;
                }
                obj = it.next();
                if (Intrinsics.areEqual(((HiType) obj).name(), hiType)) {
                    break;
                }
            }
            HiType hiType2 = (HiType) obj;
            return hiType2 == null ? HiType.UNKNOWN : hiType2;
        }
    }

    public static HiType valueOf(String str) {
        return (HiType) Enum.valueOf(HiType.class, str);
    }

    public static HiType[] values() {
        return (HiType[]) $VALUES.clone();
    }
}

Looking into the Jr App

For the Jr app, code paths were surprisingly quite different but I was eventually able to find the corresponding serial number for my hearing aids:

com.sonova.phonak.dsapp.apk - jadx-gui

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Source code
mpj
compatability
  • SupportedDeviceModel
SupportedDeviceModel
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public final class SupportedDeviceModel {
    public static final /* synthetic */ a A9;

    /* renamed from: z9, reason: collision with root package name */
    public static final /* synthetic */ SupportedDeviceModel[] f65151z9;

    /* renamed from: x, reason: collision with root package name and from kotlin metadata */
    @k
    public final String productName;

    /* renamed from: y, reason: collision with root package name and from kotlin metadata */
    @k
    public final String hardwareType;
    public static final SupportedDeviceModel A = new SupportedDeviceModel("SKY_M90_M", 0, "Sky M90-M", "067-1341");
    public static final SupportedDeviceModel B = new SupportedDeviceModel("SKY_M70_M", 1, "Sky M70-M", "067-1344");
    public static final SupportedDeviceModel X = new SupportedDeviceModel("SKY_M50_M", 2, "Sky M50-M", "067-1347");
    public static final SupportedDeviceModel Y = new SupportedDeviceModel("SKY_M30_M", 3, "Sky M30-M", "067-1350");
    public static final SupportedDeviceModel Z = new SupportedDeviceModel("SKY_M90_PR", 4, "Sky M90-PR", "067-1353");
    public static final SupportedDeviceModel C1 = new SupportedDeviceModel("SKY_M70_PR", 5, "Sky M70-PR", "067-1354");

    /* renamed from: p7, reason: collision with root package name */
    public static final SupportedDeviceModel f65119p7 = new SupportedDeviceModel("SKY_M50_PR", 6, "Sky M50-PR", "067-1355");

    /* renamed from: q7, reason: collision with root package name */
    public static final SupportedDeviceModel f65122q7 = new SupportedDeviceModel("SKY_M30_PR", 7, "Sky M30-PR", "067-1356");

    /* renamed from: r7, reason: collision with root package name */
    public static final SupportedDeviceModel f65125r7 = new SupportedDeviceModel("SKY_M90_SP", 8, "Sky M90-SP", "067-1343");

    /* renamed from: s7, reason: collision with root package name */
    public static final SupportedDeviceModel f65128s7 = new SupportedDeviceModel("SKY_M70_SP", 9, "Sky M70-SP", "067-1346");

    /* renamed from: t7, reason: collision with root package name */
    public static final SupportedDeviceModel f65131t7 = new SupportedDeviceModel("SKY_M50_SP", 10, "Sky M50-SP", "067-1349");

    /* renamed from: u7, reason: collision with root package name */
    public static final SupportedDeviceModel f65134u7 = new SupportedDeviceModel("SKY_M30_SP", 11, "Sky M30-SP", "067-1352");

    /* renamed from: v7, reason: collision with root package name */
    public static final SupportedDeviceModel f65137v7 = new SupportedDeviceModel("SKY_LINK_M", 12, "Sky Link M", "067-1401");

    /* renamed from: w7, reason: collision with root package name */
    public static final SupportedDeviceModel f65140w7 = new SupportedDeviceModel("NAIDA_P90_UP", 13, "Naída P90-UP", "067-1450");

    /* renamed from: x7, reason: collision with root package name */
    public static final SupportedDeviceModel f65143x7 = new SupportedDeviceModel("NAIDA_P70_UP", 14, "Naída P70-UP", "067-1451");

    /* renamed from: y7, reason: collision with root package name */
    public static final SupportedDeviceModel f65146y7 = new SupportedDeviceModel("NAIDA_P50_UP", 15, "Naída P50-UP", "067-1452");
    ...

Patching the standard app

Now I had everything I needed, I extracted the apk using apktool and openned the corresponding smali file for the HiType mappings object.

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FOLDERS

smali_classes4
app
myphonak
data
repositories
local
hiinfo
  • MyPhonakWhitelist.smali
MyPhonakWhitelist.smali

smali_classes4/app/myphonak/data/repositories/local/hiinfo/MyPhonakWhitelist.smali

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.class public final Lapp/myphonak/data/repositories/local/hiinfo/MyPhonakWhitelist;
.super Ljava/lang/Object;
.source "MyPhonakWhitelist.kt"


# annotations
.annotation runtime Lkotlin/Metadata;
    d1 = {
        "\u0000\u0018\n\u0002\u0018\u0002\n\u0002\u0010\u0000\n\u0002\u0008\u0003\n\u0002\u0010 \n\u0002\u0018\u0002\n\u0002\u0008\u0003\u0008\u00c6\u0002\u0018\u00002\u00020\u0001B\t\u0008\u0002\u00a2\u0006\u0004\u0008\u0002\u0010\u0003R\u0017\u0010\u0004\u001a\u0008\u0012\u0004\u0012\u00020\u00060\u00058F\u00a2\u0006\u0006\u001a\u0004\u0008\u0007\u0010\u0008\u00a8\u0006\t"
    }
    d2 = {
        "Lapp/myphonak/data/repositories/local/hiinfo/MyPhonakWhitelist;",
        "",
        "<init>",
        "()V",
        "entries",
        "",
        "Lapp/myphonak/data/models/HiInfoData;",
        "getEntries",
        "()Ljava/util/List;",
        "data_myphonakRestofworldProductionRelease"
    }
    k = 0x1
    mv = {
        0x2,
        0x0,
        0x0
    }
    xi = 0x30
.end annotation


# static fields
.field public static final INSTANCE:Lapp/myphonak/data/repositories/local/hiinfo/MyPhonakWhitelist;


# direct methods
.method static constructor <clinit>()V
    .locals 1

    new-instance v0, Lapp/myphonak/data/repositories/local/hiinfo/MyPhonakWhitelist;

    invoke-direct {v0}, Lapp/myphonak/data/repositories/local/hiinfo/MyPhonakWhitelist;-><init>()V

    sput-object v0, Lapp/myphonak/data/repositories/local/hiinfo/MyPhonakWhitelist;->INSTANCE:Lapp/myphonak/data/repositories/local/hiinfo/MyPhonakWhitelist;

    return-void
.end method

.method private constructor <init>()V
    .locals 0

    .line 7
    invoke-direct {p0}, Ljava/lang/Object;-><init>()V

    return-void
.end method


# virtual methods
.method public final getEntries()Ljava/util/List;
    .locals 5
    .annotation system Ldalvik/annotation/Signature;
        value = {
            "()",
            "Ljava/util/List<",
            "Lapp/myphonak/data/models/HiInfoData;",
            ">;"
        }
    .end annotation

    const/16 v0, 0xbf

    .line 11
    new-array v0, v0, [Lapp/myphonak/data/models/HiInfoData;

    new-instance v1, Lapp/myphonak/data/models/HiInfoData;

    sget-object v2, Lapp/myphonak/domain/models/HiType;->067-1241:Lapp/myphonak/domain/models/HiType;

    sget-object v3, Lapp/myphonak/domain/models/HiPrivateLabel;->NO:Lapp/myphonak/domain/models/HiPrivateLabel;

    const-string v4, "Aud\u00e9o B50-Direct"

    invoke-direct {v1, v4, v2, v3}, Lapp/myphonak/data/models/HiInfoData;-><init>(Ljava/lang/String;Lapp/myphonak/domain/models/HiType;Lapp/myphonak/domain/models/HiPrivateLabel;)V

    const/4 v2, 0x0

    aput-object v1, v0, v2
    
    ...

    .line 58
    new-instance v1, Lapp/myphonak/data/models/HiInfoData;

    sget-object v2, Lapp/myphonak/domain/models/HiType;->067-1309:Lapp/myphonak/domain/models/HiType;

    sget-object v3, Lapp/myphonak/domain/models/HiPrivateLabel;->NO:Lapp/myphonak/domain/models/HiPrivateLabel;

    const-string v4, "Aud\u00e9o M30-312"

    invoke-direct {v1, v4, v2, v3}, Lapp/myphonak/data/models/HiInfoData;-><init>(Ljava/lang/String;Lapp/myphonak/domain/models/HiType;Lapp/myphonak/domain/models/HiPrivateLabel;)V

    const/16 v2, 0x17

    aput-object v1, v0, v2

    .line 59
    new-instance v1, Lapp/myphonak/data/models/HiInfoData;

    .line 61
    sget-object v2, Lapp/myphonak/domain/models/HiType;->067-1309:Lapp/myphonak/domain/models/HiType;

    .line 62
    sget-object v3, Lapp/myphonak/domain/models/HiPrivateLabel;->AMPLIFON:Lapp/myphonak/domain/models/HiPrivateLabel;

    .line 59
    const-string v4, "ampli-mini R 2 M PH"

    invoke-direct {v1, v4, v2, v3}, Lapp/myphonak/data/models/HiInfoData;-><init>(Ljava/lang/String;Lapp/myphonak/domain/models/HiType;Lapp/myphonak/domain/models/HiPrivateLabel;)V

    const/16 v2, 0x18

    aput-object v1, v0, v2
    
    ...

    .line 10
    invoke-static {v0}, Lkotlin/collections/CollectionsKt;->listOf([Ljava/lang/Object;)Ljava/util/List;

    move-result-object v0

    return-object v0
.end method

I opted to modify the Audeo hearing aid model since it seemed fairly similar to the Sky M70-Ms that I have

All I did was replace Aud\u00e9o M30-312 with Hackerdude's Sky M70-M, followed by a global find+replace…

Testing

Packaging, zipaligning and signing the apk with apktool, zipalign and apksign yeilded a patched apk.

Now was the moment of truth, would it work?

Yep! The app worked flawlessly

Admitedly this isn’t the most interesting hack but I thought it was neat so…