OPPO A54s

OPPO A54s

Android 11.0

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

Cause 11 of 12: There's no credit on your prepaid phone card

If there's no credit on your prepaid phone card, you can't make calls until you've topped it up.

Solution: Visit the Vodafone web page to top up your prepaid phone card.

OPPO A54s