OPPO R11s

OPPO R11s

Android 7.1

I can't make voice calls on my OPPO R11s Android 7.1

Cause 10 of 12: Your SIM is defective

You can check if your SIM is defective by inserting it in another phone.

Solution: Find the nearest Vodafone Shop to order a new SIM.

OPPO R11s

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