Hi,all SDK:8.1.0 51822 S7 Edge(android V7.0)

i use the sumsung S7 Edge and the oppo R9S connect with my device,nRF Connect is often note:

GATT_CONN_TERMINATE_LOCAL_HOST(after discovery all service ).

And the oppo R9S,it ofter note: Error34(0x22):GATT CONN LMP TIMEOUT(after discovery all service ).

what is problem?

and what error for picture as follow when discovery service? image description Attribute not Found.pcapng