T-Mobile: set up call forwarding
Erina's number below is an example (555) 000-1111. You will get the real number in the chat.
Turn on
Dial each code, press Call and wait for the confirmation tone.
**61*15550001111#
**67*15550001111#
**62*15550001111#
Turn off
##61#
##67#
##62#
##004#