error(0x3D) Disconnected, reason 61 sdk12.3

[Mr.Wu]

I test ble bond with 'ble_app_gls' in sdk 12.3.0

eg.nRF5_SDK_12.3.0_d7731ad\examples\ble_peripheral\ble_app_gls\pca10028\s130\arm5_no_packs

my phone is meizu mx4, android 5.1, another one is coolpad 8690, android 4.4.2, test app is nRF Connect, board is pca10028.

On communication with Android device sometimes the link disconnects with disconnection reason61(0x3D) - BLE_HCI_CONN_TERMINATED_DUE_TO_MIC_FAILURE.

who can help me? thanks!

[Seth Foster]

This is happening to me on specifically a Moto G with android 7.1. I see message sequences that look like this:

[003837-1951]  NRF   BLE event: 0x10: BLE_GAP_EVT_CONNECTED
[003837-000]  NRF   Initial conn params: interval 39 timeout 2000
[003839-002]  NRF   BLE set to connected
[003873-034]  NRF   BLE event: 0x1C: BLE_GAP_EVT_RSSI_CHANGED -54
[003971-098]  NRF   BLE event: 0x11: BLE_GAP_EVT_DISCONNECTED
[003971-000]  NRF   NRF: Disconnected: 61

(The first three lines are from the single connected event, the two last lines are from the single disconnected event). I am printing out every softdevice BLE event. At no point am I attempting bonding or even simple pairing.