iPhone SE (2020)
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 On/Off until your phone restarts.