Open the Phone app
Tap Keypad
Enter `*21*` followed by the phone number you want calls diverted to, then `#`
Tap Call
To check call forwarding status, enter `*#21#` and tap Call
To turn off call forwarding, enter `#21#` and tap Call
If your carrier does not support this code, go to Settings
Tap Phone
Tap Call Forwarding
Turn on Call Forwarding
Enter the forwarding number
If Call Forwarding is not available, contact your carrier