OPPO R11

Android 7.1

I can't make voice calls on my OPPO R11 Android 7.1

Cause 1 of 3: There's a connection error

If your phone doesn't receive any calls when someone calls you, it may be caused by an unknown connection error.

Step 1 of 3

Restart your phone

Press and hold On/Off.

Step 2 of 3

Restart your phone

Simultaneously, press and hold the Top volume key until your phone turns off.

Step 3 of 3

Restart your phone

Press On/Off to turn on your phone again.

Press and hold On/Off.

Simultaneously, press and hold the Top volume key until your phone turns off.

Press On/Off to turn on your phone again.

Are you ready to upgrade your device? Check out our latest mobile phones