iPhone 15 Plus

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I can't make voice calls

Solution 4 of 8: Your phone is overloaded for unknown reasons

If your phone is slow or freezes, it might help to restart it.

Step 1 of 3

Press the Top volume key.

Step 2 of 3

Press the Bottom volume key.

Step 3 of 3

Press and hold the Side button until your phone restarts.

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