OPPO A16s

Android 11.0

I can't make voice calls on my OPPO A16s Android 11.0

Cause 5 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: Log on to My Vodafone to top up your prepaid phone card.

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