Apple iPhone 16 Pro
iOS 18
1. Find "Keypad"
Press the phone icon.
Press Keypad.
2. Divert all calls
Key in **21*+447836121121# and press the call icon.
**21*+447836121121#
3. Divert missed calls
Key in **61*+447836121121*20# and press the call icon.
Key in the required number of seconds before the call is diverted, e.g. 20. The number needs to be divisible by 5.
**61*+447836121121*20#
4. Divert if unavailable
Key in **62*+447836121121# and press the call icon.
**62*+447836121121#
5. Divert if busy
Key in **67*+447836121121# and press the call icon.
**67*+447836121121#
6. End call
Press Dismiss.
7. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.