OPPO R9s

Android 6.0.1

I can't make voice calls on my OPPO R9s Android 6.0.1

Cause 9 of 12: Roaming isn't activated in your price plan

If you try to make calls to or from foreign countries, roaming needs to be activated in your price plan.

Solution: Log on to My Vodafone to activate roaming in your price plan.

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