I just recently had to change my phone number due to a stalker problem. Went through the whole rigmarole with T-Mobile and finally was assigned a new phone number. They said it would activate immediately (which it did) but it might take a day or two for the Caller ID to start working correctly on Outgoing calls, which is fine.
The only thing that's really bugging me, and if you ask me why I'll have to ignore you, but on my Call Log window, it shows my OLD NUMBER still. It really irks me. Is this something that updates automatically from the service, or would I have to call T-Mob back to have them change it or guide me through changing it?