Can not connect Android 8 mobile phones, such as HUAWEI Nova 3

[yangshuanghua]

Can not connect Android 8 mobile phones, such as HUAWEI Nova 3

Nodic equipment is not even found.

We cannot connect with official UART routines.（ble_app_uart）。The phone was not able to found it either.

Do we need to make some special settings when initializing the protocol stack? Or other initialization settings。

the SDK is   13.0

Has anyone ever encountered such a situation?

[Jim Hu]

Did you resolve this problem? I hava met the same problem as you 

[yangshuanghua]

Pay attention to the matching of capacitor and crystal oscillator.

[Jim Hu]

Thank you very much, Now I have resolve the problem by using your advice