Android 7.0 BLE sensors disconnects randomly (Bleutooth service crash)

[mfilipemc]

Hi, my application is connecting with several sensors at same time, however during the execution randomly the bluetooth service crashes, and consequently the sensors disconnects on Android Nougat (7.0).
We have tested several approaches (removing gatt operations (write and reads) and only receive notifications), however the issue continues to happen. Could someone help me with this issue?

I've attached one log where the issue happens

02-26 10:48:55.328 4446-6027/pt.mobilesword W/BluetoothGatt: onCharacteristicRead() - Device=D2:C7:90:31:E2:XX handle=26 Status=0
02-26 10:48:55.602 4446-4459/pt.mobilesword W/BluetoothGatt: onCharacteristicRead() - Device=E4:54:32:ab:44:XX handle=26 Status=0
02-26 10:49:55.341 4446-4459/pt.mobilesword W/BluetoothGatt: onCharacteristicRead() - Device=D2:C7:90:31:E2:XX handle=26 Status=0
02-26 10:49:55.627 4446-6027/pt.mobilesword W/BluetoothGatt: onCharacteristicRead() - Device=E4:54:32:ab:44:XX handle=26 Status=0
02-26 10:50:06.254 3204-3293/? D/BluetoothAdapterService: getAdapterService() - returning com.android.bluetooth.btservice.AdapterService@57a0d3c
02-26 10:50:06.266 3204-3293/? D/BluetoothDataManager: Call QmBigDataModule API additionally
02-26 10:50:06.267 3204-3293/? E/BluetoothDataManager: getUartErrorInfo NONE
02-26 10:50:06.267 3204-3293/? E/BluetoothDataManager: “LO_MFN”:“29",“LO_LMP”:“8",“LO_SUB”:“602",“LO_FWV”:“Rome Ver. 0x149",“ERROR_REASON”:“3",“UART”:“NONE”
02-26 10:50:06.267 3204-3293/? E/BluetoothDataManager: Failed to call QmBigDataModule API
02-26 10:50:06.279 3204-3596/? I/bt_vendor: stop_hci_filter: hci_filter has been stopped already
bt-vendor : get_bt_soc_type
qcom.bluetooth.soc set to rome
02-26 10:50:06.382 3204-3596/? I/bt_vendor: stop_hci_filter: hci_filter has been stopped already
bt-vendor : get_bt_soc_type
qcom.bluetooth.soc set to rome
02-26 10:50:06.427 3247-3247/? D/A2dpProfile: Bluetooth service disconnected
02-26 10:50:06.428 3247-3247/? D/BluetoothSap: Proxy object disconnected
02-26 10:50:06.428 2830-2894/? E/BluetoothManagerService: MESSAGE_BLUETOOTH_SERVICE_DISCONNECTED: 1
02-26 10:50:06.428 2830-3127/? I/ActivityManager: Process com.android.bluetooth (pid 3204) has died(50,802)
02-26 10:50:06.429 3247-3247/? D/SapProfile: Bluetooth service disconnected
02-26 10:50:06.429 2830-3127/? W/ActivityManager: Scheduling restart of crashed service com.android.bluetooth/.btservice.AdapterService in 1000ms
02-26 10:50:06.429 3247-3247/? D/BluetoothPan: BluetoothPAN Proxy object disconnected
02-26 10:50:06.429 3247-3247/? D/PanProfile: Bluetooth service disconnected
02-26 10:50:06.429 2830-3127/? W/ActivityManager: Scheduling restart of crashed service com.android.bluetooth/.map.BluetoothMapService in 11000ms
02-26 10:50:06.429 3247-3247/? D/BluetoothMap: Proxy object disconnected
02-26 10:50:06.429 3247-3247/? D/MapProfile: Bluetooth service disconnected
02-26 10:50:06.430 3247-3247/? D/BluetoothPbap: Proxy object disconnected
02-26 10:50:06.430 3247-3247/? D/PbapServerProfile: Bluetooth service disconnected
02-26 10:50:06.430 3247-3247/? D/BluetoothInputDevice: Proxy object disconnected
02-26 10:50:06.430 3247-3247/? D/HidProfile: Bluetooth service disconnected
02-26 10:50:06.430 3247-3247/? D/HeadsetProfile: Bluetooth service disconnect