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nRF52832 connection problem with some android device

Hi, I'm using nRF52832 with sdk 13.1.0(softdevice 4.0.2). I had trouble to connect nRF52832 in some android smart device.When I restart Bluetooth,Sometimes there are problems connecting(GATT ERROR 133).Then never connected to the device unless I restart the Bluetooth or lock screen.(Only some devices).

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  • I try to use the nRFConnect app for testing.Unfortunately, it also does not work.This is some log in the nrfConnect app:

    V	11:02:01.524	Connecting to DF:85:27:EB:8A:C9...
    D	11:02:01.524	gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE)
    D	11:02:31.554	[Callback] Connection state changed with status: 133 and new state: DISCONNECTED (0)
    E	11:02:31.556	Error 133 (0x85): GATT ERROR
    I	11:02:31.556	Disconnected
    D	11:02:34.154	gatt.close()
    D	11:02:34.155	wait(200)
    V	11:02:01.524	Connecting to DF:85:27:EB:8A:C9...
    

    ... And if i can connect the device this time, I can pull my device a long way to disconnect the connection, and then close, it can always reconnect, but I have the chance to restart the Bluetooth will not connect the device.

    But i find the only one app can connect the device.(BLE Scanner(bluepixeltech) can). My device is Sony xperia Z4.(Update the system to android6.0) Sony xperia Z5 is OK.

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  • I try to use the nRFConnect app for testing.Unfortunately, it also does not work.This is some log in the nrfConnect app:

    V	11:02:01.524	Connecting to DF:85:27:EB:8A:C9...
    D	11:02:01.524	gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE)
    D	11:02:31.554	[Callback] Connection state changed with status: 133 and new state: DISCONNECTED (0)
    E	11:02:31.556	Error 133 (0x85): GATT ERROR
    I	11:02:31.556	Disconnected
    D	11:02:34.154	gatt.close()
    D	11:02:34.155	wait(200)
    V	11:02:01.524	Connecting to DF:85:27:EB:8A:C9...
    

    ... And if i can connect the device this time, I can pull my device a long way to disconnect the connection, and then close, it can always reconnect, but I have the chance to restart the Bluetooth will not connect the device.

    But i find the only one app can connect the device.(BLE Scanner(bluepixeltech) can). My device is Sony xperia Z4.(Update the system to android6.0) Sony xperia Z5 is OK.

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