Dial the call forwarding deactivation code from your phone
Common deactivation code: `##21#`
Press the call button
Wait for the confirmation message
If needed, deactivate specific forwarding types with these codes:
`##61#` for no answer
`##62#` for unreachable
`##67#` for busy
`##004#` to cancel all conditional call forwarding
Check with your mobile carrier if the codes do not work
Use phone settings to turn off call forwarding if your device supports it