OPPO R11s

Android 7.1

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

Cause 4 of 12: Not adequate network coverage

The network coverage may differ from area to area. In certain areas it may so low that it's not possible make calls.

Solution: Try making a call later when you're in an area with better network coverage. View our network coverage map.

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