Oppor7plus why do people call me? My phone doesn't ring.

Because the volume of the incoming call was turned down.

The solution is as follows:

1, press and hold the volume on the side of the phone+turn it up;

2. Confirm whether the incoming call volume of the mobile phone is adjusted to the maximum.

(1) Open the phone settings;

(2) selecting sound and vibration;

(3) In the future, the bell will ring.