OPPO A54s

OPPO A54s

Android 11.0

I can't make voice calls on my OPPO A54s Android 11.0

Cause 9 of 12: There is a temporary network problem

If there's a general problem making phone calls in a certain area, it may be be due to a temporary network error.

Solution: Try making a call later or when you're in another area.

OPPO A54s