Cannot connect on Android 11 device

[0xDE57]

Describe the bug
Android 11 device fails on connect: Unknown error from transport layer com.flipperdevices.bridge.connection.transport.ble.impl.model.BLEConnectionPermissionException

But all bluetooth permissions are granted, so it shouldn't be denied. Even the log says:
Received permissionState: ALL_GRANTED

2026-01-11 17:58:47.796 2356-2356 PermissionStateBuilder com.flipperdevices.app I All permission granted

To Reproduce
Steps to reproduce the behavior:

1. Have android 11 device
2. Connect to flipper
3. Enter pin
4. throws exception in BleDeviceConnectionApiImpl.connectUnsafe()

Expected behavior
Should connect.

Logs

2026-01-11 17:26:05.951 26250-30586 FTransportListener      com.flipperdevices.app               E  Unknown error from transport layer
                                                                                                    com.flipperdevices.bridge.connection.transport.ble.impl.model.BLEConnectionPermissionException
                                                                                                    	at com.flipperdevices.bridge.connection.transport.ble.impl.BleDeviceConnectionApiImpl.connectUnsafe(BleDeviceConnectionApiImpl.kt:43)
                                                                                                    	at com.flipperdevices.bridge.connection.transport.ble.impl.BleDeviceConnectionApiImpl.connect-BWLJW6A(BleDeviceConnectionApiImpl.kt:32)
                                                                                                    	at com.flipperdevices.bridge.connection.transport.ble.impl.BleDeviceConnectionApiImpl.connect-BWLJW6A(BleDeviceConnectionApiImpl.kt:21)
                                                                                                    	at com.flipperdevices.bridge.connection.connectionbuilder.impl.FDeviceConfigToConnectionImpl.connect-BWLJW6A(FDeviceConfigToConnectionImpl.kt:34)
                                                                                                    	at com.flipperdevices.bridge.connection.ble.impl.FDeviceHolder$connectJob$1.invokeSuspend(FDeviceHolder.kt:52)
                                                                                                    	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
                                                                                                    	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:100)
                                                                                                    	at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1411)
                                                                                                    	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:285)
                                                                                                    	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1155)
                                                                                                    	at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1993)
                                                                                                    	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1941)
                                                                                                    	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
2026-01-11 17:26:05.953 26250-30083 BluetoothAdapter        com.flipperdevices.app               D  isLeEnabled(): ON
2026-01-11 17:26:05.954 26250-26250 InAppNotif...ionStorage com.flipperdevices.app               I  #subscribe. Current listener: null, updated: com.flipperdevices.bottombar.impl.viewmodel.InAppNotificationViewModel@acf79d8
2026-01-11 17:26:05.966 26250-30586 FDeviceOrchestrator     com.flipperdevices.app               E  Failed connect
                                                                                                    com.flipperdevices.bridge.connection.transport.ble.impl.model.BLEConnectionPermissionException
                                                                                                    	at com.flipperdevices.bridge.connection.transport.ble.impl.BleDeviceConnectionApiImpl.connectUnsafe(BleDeviceConnectionApiImpl.kt:43)
                                                                                                    	at com.flipperdevices.bridge.connection.transport.ble.impl.BleDeviceConnectionApiImpl.connect-BWLJW6A(BleDeviceConnectionApiImpl.kt:32)
                                                                                                    	at com.flipperdevices.bridge.connection.transport.ble.impl.BleDeviceConnectionApiImpl.connect-BWLJW6A(BleDeviceConnectionApiImpl.kt:21)
                                                                                                    	at com.flipperdevices.bridge.connection.connectionbuilder.impl.FDeviceConfigToConnectionImpl.connect-BWLJW6A(FDeviceConfigToConnectionImpl.kt:34)
                                                                                                    	at com.flipperdevices.bridge.connection.ble.impl.FDeviceHolder$connectJob$1.invokeSuspend(FDeviceHolder.kt:52)
                                                                                                    	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
                                                                                                    	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:100)
                                                                                                    	at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1411)
                                                                                                    	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:285)
                                                                                                    	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1155)
                                                                                                    	at java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1993)
                                                                                                    	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1941)
                                                                                                    	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
2026-01-11 17:26:05.999 26250-26250 SearchStateBuilder      com.flipperdevices.app               I  Received permissionState: ALL_GRANTED, scanState: com.flipperdevices.firstpair.impl.model.ScanState$Founded@f4a9e2e, pairState: NotInitialized

[0xDE57]

Interestingly, by commenting out a couple throws, I am able to connect.

Commenting out throw BLEConnectionPermissionException() in

1. BleDeviceConnectionApiImpl.connectUnsafe()
2. FSerialOverflowThrottler constructor in init {}
3. FSerialUnsafeApiImpl.sendBytes()

Sync is now stuck at 58%, but its progress. This gives me confidence that A11 can be supported. The min SDK specified in is currently 26 (A8).

It appears there are some differences in BT permissions between Android 10, 11, 12. Looks like it must be requested at runtime?