diff --git a/app-common/src/main/AndroidManifest.xml b/app-common/src/main/AndroidManifest.xml
index b0324dc..464ae0f 100644
--- a/app-common/src/main/AndroidManifest.xml
+++ b/app-common/src/main/AndroidManifest.xml
@@ -28,10 +28,6 @@
             android:name="im.angry.openeuicc.ui.LogsActivity"
             android:label="@string/pref_advanced_logs" />
 
-        <activity
-            android:name="im.angry.openeuicc.ui.IsdrAidListActivity"
-            android:label="@string/isdr_aid_list" />
-
         <activity
             android:exported="true"
             android:name="im.angry.openeuicc.ui.wizard.DownloadWizardActivity"
diff --git a/app-common/src/main/java/im/angry/openeuicc/core/DefaultEuiccChannelFactory.kt b/app-common/src/main/java/im/angry/openeuicc/core/DefaultEuiccChannelFactory.kt
index b249675..ea0bd60 100644
--- a/app-common/src/main/java/im/angry/openeuicc/core/DefaultEuiccChannelFactory.kt
+++ b/app-common/src/main/java/im/angry/openeuicc/core/DefaultEuiccChannelFactory.kt
@@ -26,23 +26,14 @@ open class DefaultEuiccChannelFactory(protected val context: Context) : EuiccCha
         }
     }
 
-    override suspend fun tryOpenEuiccChannel(
-        port: UiccPortInfoCompat,
-        isdrAid: ByteArray
-    ): EuiccChannel? {
+    override suspend fun tryOpenEuiccChannel(port: UiccPortInfoCompat): EuiccChannel? {
         if (port.portIndex != 0) {
-            Log.w(
-                DefaultEuiccChannelManager.TAG,
-                "OMAPI channel attempted on non-zero portId, this may or may not work."
-            )
+            Log.w(DefaultEuiccChannelManager.TAG, "OMAPI channel attempted on non-zero portId, this may or may not work.")
         }
 
         ensureSEService()
 
-        Log.i(
-            DefaultEuiccChannelManager.TAG,
-            "Trying OMAPI for physical slot ${port.card.physicalSlotIndex}"
-        )
+        Log.i(DefaultEuiccChannelManager.TAG, "Trying OMAPI for physical slot ${port.card.physicalSlotIndex}")
         try {
             return EuiccChannelImpl(
                 context.getString(R.string.omapi),
@@ -53,7 +44,6 @@ open class DefaultEuiccChannelFactory(protected val context: Context) : EuiccCha
                     port,
                     context.preferenceRepository.verboseLoggingFlow
                 ),
-                isdrAid,
                 context.preferenceRepository.verboseLoggingFlow,
                 context.preferenceRepository.ignoreTLSCertificateFlow,
             ).also {
@@ -71,11 +61,7 @@ open class DefaultEuiccChannelFactory(protected val context: Context) : EuiccCha
         return null
     }
 
-    override fun tryOpenUsbEuiccChannel(
-        usbDevice: UsbDevice,
-        usbInterface: UsbInterface,
-        isdrAid: ByteArray
-    ): EuiccChannel? {
+    override fun tryOpenUsbEuiccChannel(usbDevice: UsbDevice, usbInterface: UsbInterface): EuiccChannel? {
         val (bulkIn, bulkOut) = usbInterface.endpoints.bulkPair
         if (bulkIn == null || bulkOut == null) return null
         val conn = usbManager.openDevice(usbDevice) ?: return null
@@ -90,7 +76,6 @@ open class DefaultEuiccChannelFactory(protected val context: Context) : EuiccCha
                 bulkOut,
                 context.preferenceRepository.verboseLoggingFlow
             ),
-            isdrAid,
             context.preferenceRepository.verboseLoggingFlow,
             context.preferenceRepository.ignoreTLSCertificateFlow,
         )
diff --git a/app-common/src/main/java/im/angry/openeuicc/core/DefaultEuiccChannelManager.kt b/app-common/src/main/java/im/angry/openeuicc/core/DefaultEuiccChannelManager.kt
index 74ec285..dd57eab 100644
--- a/app-common/src/main/java/im/angry/openeuicc/core/DefaultEuiccChannelManager.kt
+++ b/app-common/src/main/java/im/angry/openeuicc/core/DefaultEuiccChannelManager.kt
@@ -12,7 +12,6 @@ import im.angry.openeuicc.util.*
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.Flow
-import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.merge
@@ -50,24 +49,6 @@ open class DefaultEuiccChannelManager(
     protected open val uiccCards: Collection<UiccCardInfoCompat>
         get() = (0..<tm.activeModemCountCompat).map { FakeUiccCardInfoCompat(it) }
 
-    private suspend inline fun tryOpenChannelFirstValidAid(openFn: (ByteArray) -> EuiccChannel?): EuiccChannel? {
-        val isdrAidList =
-            parseIsdrAidList(appContainer.preferenceRepository.isdrAidListFlow.first())
-
-        return isdrAidList.firstNotNullOfOrNull {
-            Log.i(TAG, "Opening channel, trying ISDR AID ${it.encodeHex()}")
-
-            openFn(it)?.let { channel ->
-                if (channel.valid) {
-                    channel
-                } else {
-                    channel.close()
-                    null
-                }
-            }
-        }
-    }
-
     private suspend fun tryOpenEuiccChannel(port: UiccPortInfoCompat): EuiccChannel? {
         lock.withLock {
             if (port.card.physicalSlotIndex == EuiccChannelManager.USB_CHANNEL_ID) {
@@ -95,10 +76,9 @@ open class DefaultEuiccChannelManager(
                 return null
             }
 
-            val channel =
-                tryOpenChannelFirstValidAid { euiccChannelFactory.tryOpenEuiccChannel(port, it) }
+            val channel = euiccChannelFactory.tryOpenEuiccChannel(port) ?: return null
 
-            if (channel != null) {
+            if (channel.valid) {
                 channelCache.add(channel)
                 return channel
             } else {
@@ -106,6 +86,7 @@ open class DefaultEuiccChannelManager(
                     TAG,
                     "Was able to open channel for logical slot ${port.logicalSlotIndex}, but the channel is invalid (cannot get eID or profiles without errors). This slot might be broken, aborting."
                 )
+                channel.close()
                 return null
             }
         }
@@ -231,10 +212,7 @@ open class DefaultEuiccChannelManager(
                     check(channel.valid) { "Invalid channel" }
                     break
                 } catch (e: Exception) {
-                    Log.d(
-                        TAG,
-                        "Slot $physicalSlotId port $portId reconnect failure, retrying in 1000 ms"
-                    )
+                    Log.d(TAG, "Slot $physicalSlotId port $portId reconnect failure, retrying in 1000 ms")
                 }
                 delay(1000)
             }
@@ -271,18 +249,9 @@ open class DefaultEuiccChannelManager(
                 // If we don't have permission, tell UI code that we found a candidate device, but we
                 // need permission to be able to do anything with it
                 if (!usbManager.hasPermission(device)) return@withContext Pair(device, false)
-                Log.i(
-                    TAG,
-                    "Found CCID interface on ${device.deviceId}:${device.vendorId}, and has permission; trying to open channel"
-                )
+                Log.i(TAG, "Found CCID interface on ${device.deviceId}:${device.vendorId}, and has permission; trying to open channel")
                 try {
-                    val channel = tryOpenChannelFirstValidAid {
-                        euiccChannelFactory.tryOpenUsbEuiccChannel(
-                            device,
-                            iface,
-                            it
-                        )
-                    }
+                    val channel = euiccChannelFactory.tryOpenUsbEuiccChannel(device, iface)
                     if (channel != null && channel.lpa.valid) {
                         usbChannel = channel
                         return@withContext Pair(device, true)
@@ -291,10 +260,7 @@ open class DefaultEuiccChannelManager(
                     // Ignored -- skip forward
                     e.printStackTrace()
                 }
-                Log.i(
-                    TAG,
-                    "No valid eUICC channel found on USB device ${device.deviceId}:${device.vendorId}"
-                )
+                Log.i(TAG, "No valid eUICC channel found on USB device ${device.deviceId}:${device.vendorId}")
             }
             return@withContext Pair(null, false)
         }
diff --git a/app-common/src/main/java/im/angry/openeuicc/core/EuiccChannelFactory.kt b/app-common/src/main/java/im/angry/openeuicc/core/EuiccChannelFactory.kt
index 87f5885..fb5d95d 100644
--- a/app-common/src/main/java/im/angry/openeuicc/core/EuiccChannelFactory.kt
+++ b/app-common/src/main/java/im/angry/openeuicc/core/EuiccChannelFactory.kt
@@ -7,13 +7,9 @@ import im.angry.openeuicc.util.*
 // This class is here instead of inside DI because it contains a bit more logic than just
 // "dumb" dependency injection.
 interface EuiccChannelFactory {
-    suspend fun tryOpenEuiccChannel(port: UiccPortInfoCompat, isdrAid: ByteArray): EuiccChannel?
+    suspend fun tryOpenEuiccChannel(port: UiccPortInfoCompat): EuiccChannel?
 
-    fun tryOpenUsbEuiccChannel(
-        usbDevice: UsbDevice,
-        usbInterface: UsbInterface,
-        isdrAid: ByteArray
-    ): EuiccChannel?
+    fun tryOpenUsbEuiccChannel(usbDevice: UsbDevice, usbInterface: UsbInterface): EuiccChannel?
 
     /**
      * Release all resources used by this EuiccChannelFactory
diff --git a/app-common/src/main/java/im/angry/openeuicc/core/EuiccChannelImpl.kt b/app-common/src/main/java/im/angry/openeuicc/core/EuiccChannelImpl.kt
index ed8797a..a56b1cc 100644
--- a/app-common/src/main/java/im/angry/openeuicc/core/EuiccChannelImpl.kt
+++ b/app-common/src/main/java/im/angry/openeuicc/core/EuiccChannelImpl.kt
@@ -13,17 +13,21 @@ class EuiccChannelImpl(
     override val port: UiccPortInfoCompat,
     override val intrinsicChannelName: String?,
     override val apduInterface: ApduInterface,
-    isdrAid: ByteArray,
     verboseLoggingFlow: Flow<Boolean>,
     ignoreTLSCertificateFlow: Flow<Boolean>
 ) : EuiccChannel {
+    companion object {
+        // TODO: This needs to go somewhere else.
+        val ISDR_AID = "A0000005591010FFFFFFFF8900000100".decodeHex()
+    }
+
     override val slotId = port.card.physicalSlotIndex
     override val logicalSlotId = port.logicalSlotIndex
     override val portId = port.portIndex
 
     override val lpa: LocalProfileAssistant =
         LocalProfileAssistantImpl(
-            isdrAid,
+            ISDR_AID,
             apduInterface,
             HttpInterfaceImpl(verboseLoggingFlow, ignoreTLSCertificateFlow)
         )
diff --git a/app-common/src/main/java/im/angry/openeuicc/ui/IsdrAidListActivity.kt b/app-common/src/main/java/im/angry/openeuicc/ui/IsdrAidListActivity.kt
deleted file mode 100644
index 6553421..0000000
--- a/app-common/src/main/java/im/angry/openeuicc/ui/IsdrAidListActivity.kt
+++ /dev/null
@@ -1,67 +0,0 @@
-package im.angry.openeuicc.ui
-
-import android.os.Bundle
-import android.text.Editable
-import android.view.Menu
-import android.view.MenuItem
-import android.widget.EditText
-import android.widget.Toast
-import androidx.activity.enableEdgeToEdge
-import androidx.appcompat.app.AppCompatActivity
-import androidx.lifecycle.lifecycleScope
-import im.angry.openeuicc.common.R
-import im.angry.openeuicc.util.preferenceRepository
-import im.angry.openeuicc.util.setupToolbarInsets
-import kotlinx.coroutines.flow.collect
-import kotlinx.coroutines.flow.onEach
-import kotlinx.coroutines.launch
-
-class IsdrAidListActivity : AppCompatActivity() {
-    private lateinit var isdrAidListEditor: EditText
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        enableEdgeToEdge()
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_isdr_aid_list)
-        setSupportActionBar(requireViewById(R.id.toolbar))
-        setupToolbarInsets()
-        supportActionBar!!.setDisplayHomeAsUpEnabled(true)
-
-        isdrAidListEditor = requireViewById(R.id.isdr_aid_list_editor)
-
-        lifecycleScope.launch {
-            preferenceRepository.isdrAidListFlow.onEach {
-                isdrAidListEditor.text = Editable.Factory.getInstance().newEditable(it)
-            }.collect()
-        }
-    }
-
-    override fun onCreateOptionsMenu(menu: Menu?): Boolean {
-        menuInflater.inflate(R.menu.activity_isdr_aid_list, menu)
-        return true
-    }
-
-    override fun onOptionsItemSelected(item: MenuItem): Boolean =
-        when (item.itemId) {
-            R.id.save -> {
-                lifecycleScope.launch {
-                    preferenceRepository.isdrAidListFlow.updatePreference(isdrAidListEditor.text.toString())
-                    Toast.makeText(
-                        this@IsdrAidListActivity,
-                        R.string.isdr_aid_list_saved,
-                        Toast.LENGTH_SHORT
-                    ).show()
-                }
-                true
-            }
-
-            R.id.reset -> {
-                lifecycleScope.launch {
-                    preferenceRepository.isdrAidListFlow.removePreference()
-                }
-                true
-            }
-
-            else -> super.onOptionsItemSelected(item)
-        }
-}
\ No newline at end of file
diff --git a/app-common/src/main/java/im/angry/openeuicc/ui/SettingsFragment.kt b/app-common/src/main/java/im/angry/openeuicc/ui/SettingsFragment.kt
index 6554142..d137e90 100644
--- a/app-common/src/main/java/im/angry/openeuicc/ui/SettingsFragment.kt
+++ b/app-common/src/main/java/im/angry/openeuicc/ui/SettingsFragment.kt
@@ -83,10 +83,6 @@ open class SettingsFragment: PreferenceFragmentCompat() {
 
         requirePreference<CheckBoxPreference>("pref_developer_euicc_memory_reset")
             .bindBooleanFlow(preferenceRepository.euiccMemoryResetFlow)
-
-        requirePreference<Preference>("pref_developer_isdr_aid_list").apply {
-            intent = Intent(requireContext(), IsdrAidListActivity::class.java)
-        }
     }
 
     protected fun <T : Preference> requirePreference(key: CharSequence) =
diff --git a/app-common/src/main/java/im/angry/openeuicc/util/PreferenceUtils.kt b/app-common/src/main/java/im/angry/openeuicc/util/PreferenceUtils.kt
index 928079f..c69c5e4 100644
--- a/app-common/src/main/java/im/angry/openeuicc/util/PreferenceUtils.kt
+++ b/app-common/src/main/java/im/angry/openeuicc/util/PreferenceUtils.kt
@@ -5,13 +5,11 @@ import androidx.datastore.core.DataStore
 import androidx.datastore.preferences.core.Preferences
 import androidx.datastore.preferences.core.booleanPreferencesKey
 import androidx.datastore.preferences.core.edit
-import androidx.datastore.preferences.core.stringPreferencesKey
 import androidx.datastore.preferences.preferencesDataStore
 import androidx.fragment.app.Fragment
 import im.angry.openeuicc.OpenEuiccApplication
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
-import java.util.Base64
 
 private val Context.dataStore: DataStore<Preferences> by preferencesDataStore(name = "prefs")
 
@@ -37,20 +35,6 @@ internal object PreferenceKeys {
     val UNFILTERED_PROFILE_LIST = booleanPreferencesKey("unfiltered_profile_list")
     val IGNORE_TLS_CERTIFICATE = booleanPreferencesKey("ignore_tls_certificate")
     val EUICC_MEMORY_RESET = booleanPreferencesKey("euicc_memory_reset")
-    val ISDR_AID_LIST = stringPreferencesKey("isdr_aid_list")
-}
-
-const val EUICC_DEFAULT_ISDR_AID = "A0000005591010FFFFFFFF8900000100"
-
-internal object PreferenceConstants {
-    val DEFAULT_AID_LIST = """
-        # One AID per line. Comment lines start with #.
-        # eUICC standard
-        $EUICC_DEFAULT_ISDR_AID
-        
-        # 5ber
-        A0000005591010FFFFFFFF8900050500
-    """.trimIndent()
 }
 
 open class PreferenceRepository(private val context: Context) {
@@ -70,46 +54,20 @@ open class PreferenceRepository(private val context: Context) {
     val unfilteredProfileListFlow = bindFlow(PreferenceKeys.UNFILTERED_PROFILE_LIST, false)
     val ignoreTLSCertificateFlow = bindFlow(PreferenceKeys.IGNORE_TLS_CERTIFICATE, false)
     val euiccMemoryResetFlow = bindFlow(PreferenceKeys.EUICC_MEMORY_RESET, false)
-    val isdrAidListFlow = bindFlow(
-        PreferenceKeys.ISDR_AID_LIST,
-        PreferenceConstants.DEFAULT_AID_LIST,
-        { Base64.getEncoder().encodeToString(it.encodeToByteArray()) },
-        { Base64.getDecoder().decode(it).decodeToString() })
 
-    protected fun <T> bindFlow(
-        key: Preferences.Key<T>,
-        defaultValue: T,
-        encoder: (T) -> T = { it },
-        decoder: (T) -> T = { it }
-    ): PreferenceFlowWrapper<T> =
-        PreferenceFlowWrapper(context, key, defaultValue, encoder, decoder)
+    protected fun <T> bindFlow(key: Preferences.Key<T>, defaultValue: T): PreferenceFlowWrapper<T> =
+        PreferenceFlowWrapper(context, key, defaultValue)
 }
 
 class PreferenceFlowWrapper<T> private constructor(
     private val context: Context,
     private val key: Preferences.Key<T>,
     inner: Flow<T>,
-    private val encoder: (T) -> T,
 ) : Flow<T> by inner {
-    internal constructor(
-        context: Context,
-        key: Preferences.Key<T>,
-        defaultValue: T,
-        encoder: (T) -> T,
-        decoder: (T) -> T
-    ) :
-            this(
-                context,
-                key,
-                context.dataStore.data.map { it[key]?.let(decoder) ?: defaultValue },
-                encoder
-            )
+    internal constructor(context: Context, key: Preferences.Key<T>, defaultValue: T) :
+            this(context, key, context.dataStore.data.map { it[key] ?: defaultValue })
 
     suspend fun updatePreference(value: T) {
-        context.dataStore.edit { it[key] = encoder(value) }
-    }
-
-    suspend fun removePreference() {
-        context.dataStore.edit { it.remove(key) }
+        context.dataStore.edit { it[key] = value }
     }
 }
diff --git a/app-common/src/main/java/im/angry/openeuicc/util/StringUtils.kt b/app-common/src/main/java/im/angry/openeuicc/util/StringUtils.kt
index 9f993a3..8d72462 100644
--- a/app-common/src/main/java/im/angry/openeuicc/util/StringUtils.kt
+++ b/app-common/src/main/java/im/angry/openeuicc/util/StringUtils.kt
@@ -1,7 +1,7 @@
 package im.angry.openeuicc.util
 
 fun String.decodeHex(): ByteArray {
-    require(length % 2 == 0) { "Must have an even length" }
+    check(length % 2 == 0) { "Must have an even length" }
 
     val decodedLength = length / 2
     val out = ByteArray(decodedLength)
@@ -29,22 +29,6 @@ fun formatFreeSpace(size: Int): String =
         "$size B"
     }
 
-/**
- * Decode a list of potential ISDR AIDs, one per line. Lines starting with '#' are ignored.
- * If none is found, at least EUICC_DEFAULT_ISDR_AID is returned
- */
-fun parseIsdrAidList(s: String): List<ByteArray> =
-    s.split('\n').map(String::trim).filter { !it.startsWith('#') }
-        .map(String::trim)
-        .mapNotNull {
-            try {
-                it.decodeHex()
-            } catch (_: IllegalArgumentException) {
-                null
-            }
-        }
-        .ifEmpty { listOf(EUICC_DEFAULT_ISDR_AID.decodeHex()) }
-
 fun String.prettyPrintJson(): String {
     val ret = StringBuilder()
     var inQuotes = false
diff --git a/app-common/src/main/res/layout/activity_isdr_aid_list.xml b/app-common/src/main/res/layout/activity_isdr_aid_list.xml
deleted file mode 100644
index 06a75a1..0000000
--- a/app-common/src/main/res/layout/activity_isdr_aid_list.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent">
-
-    <include layout="@layout/toolbar_activity" />
-
-    <EditText
-        android:id="@+id/isdr_aid_list_editor"
-        android:layout_width="0dp"
-        android:layout_height="0dp"
-        android:importantForAutofill="no"
-        android:inputType="textMultiLine"
-        android:gravity="top|start"
-        app:layout_constraintTop_toBottomOf="@id/toolbar"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintBottom_toBottomOf="parent"
-        tools:ignore="LabelFor" />
-
-</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app-common/src/main/res/menu/activity_isdr_aid_list.xml b/app-common/src/main/res/menu/activity_isdr_aid_list.xml
deleted file mode 100644
index 32f178a..0000000
--- a/app-common/src/main/res/menu/activity_isdr_aid_list.xml
+++ /dev/null
@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto">
-    <item
-        android:id="@+id/save"
-        android:icon="@drawable/ic_save_as_black"
-        android:title="@string/logs_save"
-        app:showAsAction="always" />
-
-    <item
-        android:id="@+id/reset"
-        android:title="@string/reset"
-        android:icon="@drawable/ic_refresh_black"
-        app:showAsAction="ifRoom" />
-</menu>
\ No newline at end of file
diff --git a/app-common/src/main/res/values-ja/strings.xml b/app-common/src/main/res/values-ja/strings.xml
index d51e2c7..35fd400 100644
--- a/app-common/src/main/res/values-ja/strings.xml
+++ b/app-common/src/main/res/values-ja/strings.xml
@@ -124,7 +124,6 @@
     <string name="logs_filename_template">%s のログ</string>
     <string name="developer_options_steps">開発者になるまであと %d ステップです。</string>
     <string name="developer_options_enabled">あなたは開発者になりました！</string>
-    <string name="isdr_aid_list_saved">カスタム ISD-R AID リストが保存されました</string>
     <string name="pref_settings">設定</string>
     <string name="pref_notifications">通知</string>
     <string name="pref_notifications_desc">eSIM のプロファイル操作により、通信事業者に通知が送信されます。必要に応じてこの動作を微調整できます。</string>
@@ -149,7 +148,6 @@
     <string name="pref_developer_unfiltered_profile_list_desc">非運用のプロファイルも含めます</string>
     <string name="pref_developer_ignore_tls_certificate">SM-DP+ TLS 証明書を無視する</string>
     <string name="pref_developer_ignore_tls_certificate_desc">RSP サーバーで使用される TLS 証明書を受け入れます</string>
-    <string name="pref_developer_isdr_aid_list_desc">一部のブランドの取り外し可能な eUICC では、独自の非標準 ISD-R AID が使用されている場合があり、サードパーティ アプリからアクセスできなくなります。アプリはこのリストに追加された非標準の AID の使用を試みる可能性がありますが、動作することは保証されません。</string>
     <string name="pref_info">情報</string>
     <string name="pref_info_app_version">アプリバージョン</string>
     <string name="pref_info_source_code">ソースコード</string>
@@ -166,7 +164,4 @@
     <string name="pref_developer_euicc_memory_reset">eUICC の消去を可能にする</string>
     <string name="pref_developer_euicc_memory_reset_desc">この操作は、デフォルトでは非表示になっている危険な操作です。代わりに、すべての構成ファイルを手動で削除することもできます。</string>
     <string name="pref_developer_refresh_after_switch">モデムに更新コマンドを送信</string>
-    <string name="pref_developer_isdr_aid_list">ISD-R AID リストのカスタマイズ</string>
-    <string name="reset">リセット</string>
-    <string name="isdr_aid_list">ISD-R AID リスト</string>
 </resources>
diff --git a/app-common/src/main/res/values-zh-rCN/strings.xml b/app-common/src/main/res/values-zh-rCN/strings.xml
index 32ced90..2e069bd 100644
--- a/app-common/src/main/res/values-zh-rCN/strings.xml
+++ b/app-common/src/main/res/values-zh-rCN/strings.xml
@@ -65,7 +65,6 @@
     <string name="profile_notification_delete">删除</string>
     <string name="logs_save">保存日志</string>
     <string name="logs_filename_template">%s 的日志</string>
-    <string name="isdr_aid_list_saved">自定义 ISD-R AID 列表已保存</string>
     <string name="pref_settings">设置</string>
     <string name="pref_notifications">通知</string>
     <string name="pref_notifications_desc">操作 eSIM 配置文件会向运营商发送通知。根据需要在此处微调此行为。</string>
@@ -82,7 +81,6 @@
     <string name="pref_advanced_verbose_logging_desc">详细日志中包含敏感信息，开启此功能后请仅与你信任的人共享你的日志。</string>
     <string name="pref_advanced_logs">日志</string>
     <string name="pref_advanced_logs_desc">查看应用程序的最新调试日志</string>
-    <string name="pref_developer_isdr_aid_list_desc">某些品牌的可移除 eUICC 可能会使用自己的非标准 ISD-R AID，导致第三方应用无法访问。此 App 可以尝试使用此列表中添加的非标准 AID，但不能保证它们一定有效。</string>
     <string name="pref_info">信息</string>
     <string name="pref_info_app_version">App 版本</string>
     <string name="pref_info_source_code">源码</string>
@@ -166,7 +164,4 @@
     <string name="pref_developer_euicc_memory_reset">允许擦除 eUICC</string>
     <string name="pref_developer_euicc_memory_reset_desc">此操作是默认隐藏的危险操作。作为替代方案，您可以手动删除所有配置文件。</string>
     <string name="pref_developer_refresh_after_switch">向基带发送刷新命令</string>
-    <string name="pref_developer_isdr_aid_list">自定义 ISD-R AID 列表</string>
-    <string name="reset">重置</string>
-    <string name="isdr_aid_list">ISD-R AID 列表</string>
 </resources>
\ No newline at end of file
diff --git a/app-common/src/main/res/values-zh-rTW/strings.xml b/app-common/src/main/res/values-zh-rTW/strings.xml
index 5136bf7..729893c 100644
--- a/app-common/src/main/res/values-zh-rTW/strings.xml
+++ b/app-common/src/main/res/values-zh-rTW/strings.xml
@@ -65,7 +65,6 @@
     <string name="profile_notification_delete">刪除</string>
     <string name="logs_save">儲存日誌</string>
     <string name="logs_filename_template">%s 的日誌</string>
-    <string name="isdr_aid_list_saved">自訂 ISD-R AID 列表已儲存</string>
     <string name="pref_settings">設定</string>
     <string name="pref_notifications">通知</string>
     <string name="pref_notifications_desc">變更 eSIM 設定檔會向電信業者傳送通知。根據需要在此處微調此行為。</string>
@@ -82,7 +81,6 @@
     <string name="pref_advanced">進階</string>
     <string name="pref_advanced_disable_safeguard_removable_esim">允許 停用/刪除 已啟用的設定檔</string>
     <string name="pref_advanced_disable_safeguard_removable_esim_desc">預設情況下，此應用程式會阻止您停用可插拔 eSIM 中已啟用的設定檔。\n因為這樣做 <i>有時</i> 會導致無法存取。\n勾選此框以 <i>移除</i> 此保護措施。</string>
-    <string name="pref_developer_isdr_aid_list_desc">某些品牌的可移除 eUICC 可能會使用自己的非標準 ISD-R AID，導致第三方應用程式無法存取。此 App 可以嘗試使用此清單中新增的非標準 AID，但不能保證它們一定有效。</string>
     <string name="pref_info">資訊</string>
     <string name="pref_info_app_version">App 版本</string>
     <string name="pref_info_source_code">原始碼</string>
@@ -166,7 +164,4 @@
     <string name="pref_developer_euicc_memory_reset">允許擦除 eUICC</string>
     <string name="pref_developer_euicc_memory_reset_desc">此操作是預設隱藏的危險操作。作為替代方案，您可以手動刪除所有設定檔。</string>
     <string name="pref_developer_refresh_after_switch">向基帶發送刷新命令</string>
-    <string name="pref_developer_isdr_aid_list">自訂 ISD-R AID 列表</string>
-    <string name="reset">重置</string>
-    <string name="isdr_aid_list">ISD-R AID 列表</string>
 </resources>
\ No newline at end of file
diff --git a/app-common/src/main/res/values/strings.xml b/app-common/src/main/res/values/strings.xml
index 5e4e4da..a366b88 100644
--- a/app-common/src/main/res/values/strings.xml
+++ b/app-common/src/main/res/values/strings.xml
@@ -162,11 +162,6 @@
     <string name="developer_options_steps">You are %d steps away from being a developer.</string>
     <string name="developer_options_enabled">You are now a developer!</string>
 
-    <string name="reset">Reset</string>
-
-    <string name="isdr_aid_list">ISD-R AID List</string>
-    <string name="isdr_aid_list_saved">Saved custom ISD-R AID list.</string>
-
     <string name="pref_settings">Settings</string>
     <string name="pref_notifications">Notifications</string>
     <string name="pref_notifications_desc">eSIM profile operations send notifications to the carrier. Fine-tune this behavior as needed here.</string>
@@ -194,8 +189,6 @@
     <string name="pref_developer_ignore_tls_certificate_desc">Accept any TLS certificate used by the RSP server</string>
     <string name="pref_developer_euicc_memory_reset">Allow erasing eUICC</string>
     <string name="pref_developer_euicc_memory_reset_desc">This is a dangerous operation and hidden by default. As an alternative, you can delete all profiles manually.</string>
-    <string name="pref_developer_isdr_aid_list">Customize ISD-R AID list</string>
-    <string name="pref_developer_isdr_aid_list_desc">Some brands of removable eUICCs may use their own non-standard ISD-R AID, rendering them inaccessible to third-party apps. We can attempt to use non-standard AIDs added in this list, but there is no guarantee that they will work.</string>
     <string name="pref_info">Info</string>
     <string name="pref_info_app_version">App Version</string>
     <string name="pref_info_source_code">Source Code</string>
diff --git a/app-common/src/main/res/xml/pref_settings.xml b/app-common/src/main/res/xml/pref_settings.xml
index 690a120..ce700f5 100644
--- a/app-common/src/main/res/xml/pref_settings.xml
+++ b/app-common/src/main/res/xml/pref_settings.xml
@@ -81,12 +81,6 @@
             app:summary="@string/pref_developer_euicc_memory_reset_desc"
             app:title="@string/pref_developer_euicc_memory_reset" />
 
-        <Preference
-            app:iconSpaceReserved="false"
-            app:key="pref_developer_isdr_aid_list"
-            app:title="@string/pref_developer_isdr_aid_list"
-            app:summary="@string/pref_developer_isdr_aid_list_desc" />
-
     </im.angry.openeuicc.ui.preference.LongSummaryPreferenceCategory>
 
     <PreferenceCategory
diff --git a/app-unpriv/src/main/java/im/angry/openeuicc/util/CompatibilityCheck.kt b/app-unpriv/src/main/java/im/angry/openeuicc/util/CompatibilityCheck.kt
index 94ee9d6..8424c55 100644
--- a/app-unpriv/src/main/java/im/angry/openeuicc/util/CompatibilityCheck.kt
+++ b/app-unpriv/src/main/java/im/angry/openeuicc/util/CompatibilityCheck.kt
@@ -128,6 +128,10 @@ internal class OmapiConnCheck(private val context: Context): CompatibilityCheck(
 }
 
 internal class IsdrChannelAccessCheck(private val context: Context): CompatibilityCheck(context) {
+    companion object {
+        val ISDR_AID = "A0000005591010FFFFFFFF8900000100".decodeHex()
+    }
+
     override val title: String
         get() = context.getString(R.string.compatibility_check_isdr_channel)
     override val defaultDescription: String
@@ -143,10 +147,7 @@ internal class IsdrChannelAccessCheck(private val context: Context): Compatibili
 
         val (validSlotIds, result) = readers.map {
             try {
-                // Note: we ONLY check the default ISD-R AID, because this test is for the _device_,
-                // NOT the eUICC. We don't care what AID a potential eUICC might use, all we need to
-                // check is we can open _some_ AID.
-                it.openSession().openLogicalChannel(EUICC_DEFAULT_ISDR_AID.decodeHex())?.close()
+                it.openSession().openLogicalChannel(ISDR_AID)?.close()
                 Pair(it.slotIndex, State.SUCCESS)
             } catch (_: SecurityException) {
                 // Ignore; this is expected when everything works
diff --git a/app/src/main/java/im/angry/openeuicc/core/PrivilegedEuiccChannelFactory.kt b/app/src/main/java/im/angry/openeuicc/core/PrivilegedEuiccChannelFactory.kt
index 5489bd5..d9bceda 100644
--- a/app/src/main/java/im/angry/openeuicc/core/PrivilegedEuiccChannelFactory.kt
+++ b/app/src/main/java/im/angry/openeuicc/core/PrivilegedEuiccChannelFactory.kt
@@ -14,15 +14,12 @@ class PrivilegedEuiccChannelFactory(context: Context) : DefaultEuiccChannelFacto
         get() = context
 
     @Suppress("NAME_SHADOWING")
-    override suspend fun tryOpenEuiccChannel(
-        port: UiccPortInfoCompat,
-        isdrAid: ByteArray
-    ): EuiccChannel? {
+    override suspend fun tryOpenEuiccChannel(port: UiccPortInfoCompat): EuiccChannel? {
         val port = port as RealUiccPortInfoCompat
         if (port.card.isRemovable) {
             // Attempt unprivileged (OMAPI) before TelephonyManager
             // but still try TelephonyManager in case OMAPI is broken
-            super.tryOpenEuiccChannel(port, isdrAid)?.let { return it }
+            super.tryOpenEuiccChannel(port)?.let { return it }
         }
 
         if (port.card.isEuicc || preferenceRepository.removableTelephonyManagerFlow.first()) {
@@ -40,7 +37,6 @@ class PrivilegedEuiccChannelFactory(context: Context) : DefaultEuiccChannelFacto
                         telephonyManager,
                         context.preferenceRepository.verboseLoggingFlow
                     ),
-                    isdrAid,
                     context.preferenceRepository.verboseLoggingFlow,
                     context.preferenceRepository.ignoreTLSCertificateFlow,
                 )
@@ -53,6 +49,6 @@ class PrivilegedEuiccChannelFactory(context: Context) : DefaultEuiccChannelFacto
             }
         }
 
-        return super.tryOpenEuiccChannel(port, isdrAid)
+        return super.tryOpenEuiccChannel(port)
     }
 }
\ No newline at end of file