Android Question B4A App runs fine with Android 5 will not run with Samsung phone running Android 10

[fredeady]

I'm missing something.. So, I decided to reach out.. I have a B4A/BLE app that runs like a fine sewing machine on a cheap WalMart LG phone running Android 5.1.1.
Try to run the very same app on a Samsung S10 running Android 10 and it refuses to connect via BLE. I've checked all of the usual suspects (non-Google Play apps can be installed, BLE activated, B4A Manifest SDK versions, Nordic forum, etc.). I've also searched this forum for clues.

The BLE target is a Nordic nRF52832. I'm running the latest spin of B4A. I am replacing a previous non-B4A Android app that did not run on the Samsung S10 correctly (same issue as I am having).
Are there any B4A Samsung S10 "tricks" that I am not using?

Thanks in advance for any direction or support anyone can give.

 

[fredeady]

Update.. Found a reason why it didn't work.. The B4A app was just fine.
The problem was that the Location permission was not activated for the B4A app..
Once I gave the B4A app permission to use Location when the app was in use, it connects every time.

Samsung A11 and S10: Settings -> Apps -> BarkBlaster(or your B4A app) -> App Permissions -> Allow Location

 

[f0raster0]

Update.. Found a reason why it didn't work.. The B4A app was just fine.
The problem was that the Location permission was not activated for the B4A app..
Once I gave the B4A app permission to use Location when the app was in use, it connects every time.

Samsung A11 and S10: Settings -> Apps -> BarkBlaster(or your B4A app) -> App Permissions -> Allow Location

niiiiceeeee

B4A App runs fine with Android 5 will not run with Samsung phone running Android 10

I'm missing something.. So, I decided to reach out.. I have a B4A/BLE app that runs like a fine sewing machine on a cheap WalMart LG phone running Android 5.1.1. Try to run the very same app on a Samsung S10 running Android 10 and it refuses to connect via BLE. I've checked all of the usual...

www.b4x.com

 

[Arnaud]

Unfortunately, always the same result, Location permission was already enabled in my APP and always "Disconnect" message.

I have compared the log between B4A APP and BLE Scanner APP, and I can see that the UUID is not the same, maybe it is the reason?

Thanks

-------------------------B4A APP------------------------------------

connect() - device: D8:80:39:F1:20:33, auto: true
registerApp()
registerApp() - UUID=bf470bf7-13de-43ef-b36b-d152d6289488
registerClient() - UUID=bf470bf7-13de-43ef-b36b-d152d6289488
onClientRegistered() - UUID=bf470bf7-13de-43ef-b36b-d152d6289488, clientIf=10
onClientRegistered() - status=0 clientIf=10
clientConnect() - clientIf =10, address=D8:80:39:F1:20:33, isDirect=false, transport = 0
btif_get_address_type: Device [d8:80:39:f1:20:33] address type 0
btif_get_device_type: Device [d8:80:39:f1:20:33] type 3
Unsupported transport for background connection
bta_gattc_init_bk_conn unable to connect to remote bd_addr:d8:80:39:f1:20:33
onConnected() - clientIf=10, connId=65535, address=D8:80:39:F1:20:33
onClientConnectionState() - status=133 clientIf=10 device=D8:80:39:F1:20:33
close()
unregisterApp() - mClientIf=10
unregisterClient() - clientIf=10
Disconnected



-------------------------BLE Scanner APP------------------------------------

connect() - device: D8:80:39:F1:20:33, auto: false
registerApp()
registerApp() - UUID=570619e6-f8f3-4b15-99b8-9a31d53e2b42
registerClient() - UUID=570619e6-f8f3-4b15-99b8-9a31d53e2b42
onClientRegistered() - UUID=570619e6-f8f3-4b15-99b8-9a31d53e2b42, clientIf=11
onClientRegistered() - status=0 clientIf=11
clientConnect() - clientIf =11, address=D8:80:39:F1:20:33, isDirect=true, transport = 2
btif_get_address_type: Device [d8:80:39:f1:20:33] address type 0
btif_get_device_type: Device [d8:80:39:f1:20:33] type 3
.....
Connected

 

[f0raster0]

Unfortunately, always the same result, Location permission was already enabled in my APP and always "Disconnect" message.

I have compared the log between B4A APP and BLE Scanner APP, and I can see that the UUID is not the same, maybe it is the reason?

Thanks

-------------------------B4A APP------------------------------------

connect() - device: D8:80:39:F1:20:33, auto: true
registerApp()
registerApp() - UUID=bf470bf7-13de-43ef-b36b-d152d6289488
registerClient() - UUID=bf470bf7-13de-43ef-b36b-d152d6289488
onClientRegistered() - UUID=bf470bf7-13de-43ef-b36b-d152d6289488, clientIf=10
onClientRegistered() - status=0 clientIf=10
clientConnect() - clientIf =10, address=D8:80:39:F1:20:33, isDirect=false, transport = 0
btif_get_address_type: Device [d8:80:39:f1:20:33] address type 0
btif_get_device_type: Device [d8:80:39:f1:20:33] type 3
Unsupported transport for background connection
bta_gattc_init_bk_conn unable to connect to remote bd_addr:d8:80:39:f1:20:33
onConnected() - clientIf=10, connId=65535, address=D8:80:39:F1:20:33
onClientConnectionState() - status=133 clientIf=10 device=D8:80:39:F1:20:33
close()
unregisterApp() - mClientIf=10
unregisterClient() - clientIf=10
Disconnected



-------------------------BLE Scanner APP------------------------------------

connect() - device: D8:80:39:F1:20:33, auto: false
registerApp()
registerApp() - UUID=570619e6-f8f3-4b15-99b8-9a31d53e2b42
registerClient() - UUID=570619e6-f8f3-4b15-99b8-9a31d53e2b42
onClientRegistered() - UUID=570619e6-f8f3-4b15-99b8-9a31d53e2b42, clientIf=11
onClientRegistered() - status=0 clientIf=11
clientConnect() - clientIf =11, address=D8:80:39:F1:20:33, isDirect=true, transport = 2
btif_get_address_type: Device [d8:80:39:f1:20:33] address type 0
btif_get_device_type: Device [d8:80:39:f1:20:33] type 3
.....
Connected

is not better ask a new question for your error?

wht do you get when running this example:

[B4X] BLE 2 - Bluetooth Low Energy

This library replaces the previous BLE library. It is simpler to use and it is more powerful. Its API is based on B4i iBLE library which makes it easy to reuse B4i code. See the iBLE tutorial: https://www.b4x.com/android/forum/threads/ble-bluetooth-low-energy-library.46099/#content Tips &...

www.b4x.com

Edit: use nRF connect App to make sure you are getting the right information

 

[Arnaud]

@f0raster0 , thanks for your help.

I have exactly the same error with this APP BLE example :

[B4X] BLE 2 - Bluetooth Low Energy

This library replaces the previous BLE library. It is simpler to use and it is more powerful. Its API is based on B4i iBLE library which makes it easy to reuse B4i code. See the iBLE tutorial: https://www.b4x.com/android/forum/threads/ble-bluetooth-low-energy-library.46099/#content Tips &...

www.b4x.com

I follow your advice and post a new thread.

Thanks