ok for people who just unlocked their shiny storm and have the msg on the top saying ACTIVATION REQUIRED msg i found the way to do it ....
go to the dial pad then type ##111111 send,than on the first line erase the numbers and put your phone number instead than save.The phone will reboot and the ACTIVATION REQUIRED is gone and the name of the carrier will be displayed...in the dial pad you will now see your phone number....
BE CAREFUL THIS TRICK WILL ONLY WORK ONCE!!! MAKE SURE YOU WRITE THE RIGHT PHONE NUMBER THAT YOU WANT THE PHONE TO DISPLAY...