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Apple iPhone 7

Troubleshooting

If your device isn't working properly, you can try several solutions to solve the problem.
In most cases you can solve the problem by following these guidelines:

I can't make voice calls

Cause 2 of 7: There's an error at the receiving end

If you're having problems calling a specific number, the error might be at the receiving end.

Solution: Try calling another number. If you can call another number, the error is probably at the receiving end.