Apple iPhone 6s Plus

iOS 10.0

iOS 15.2 iOS 14.0 iOS 13.1 iOS 12.0 iOS 11.0 iOS 10.0 iOS 9.0

I can't make voice calls on my Apple iPhone 6s Plus iOS 10.0

Cause 1 of 2: There's a connection error

If your phone doesn't receive any calls when someone calls you, it may be caused by an unknown connection error.

Step 1 of 2

Restart your phone

Press and hold the Home key.

Step 2 of 2

Restart your phone

Simultaneously, press and hold On/Off until your phone restarts.

Press and hold the Home key.

Simultaneously, press and hold On/Off until your phone restarts.

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