OPPO A57 4G

Android 12.0

I can't make voice calls on my OPPO A57 4G Android 12.0

Cause 4 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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