Originally posted by: pm
You can swap phones all you want... what you usually do not get, though, is a particularly good deal on a new phone from T-Mobile since they already have you locked into a contract. But if you are willing to pay for a phone, then it's easy to swap... just get an unlocked (or T-Mobile USA locked) phone and swap SIM cards... no need to even call customer support.
Its a little diffrent with the sidekicks as they use a proxy from Danger (sidekick makers). Danger wont allow a non sidekick device (or a unregistered sidekick) to access data thru their servers. You can take a sidekick sim and place it in any other Tmobile or unlocked phone and have voice service, but you cant use the data unless you call Tmobile (it may require a new sim altogether, Im not sure if its a special sim or not for the sidekicks). And since the OP stated he was hearing impaired, Im sure data is the most important thing. Best bet is to go to a tmobile store and tell them you want to switch from the SK to another phone. They will be able to either change it over themselves, or contact data CS to make the change for you.
A good quote from the faq in the Danger subforum of hofo:
I HAVE TWO PHONES AND WANT TO SWAP MY SIM AND USE THEM INTERCHANGABLY. DO I NEED TO TRADE PLANS EACH TIME?
Not necessarily. If you just want to use SMS (MMS is NOT included) on your other phone, you can keep the SK Data Plan. Any mobile web, AIM or MMS used will be charged accordingly as if you had no data plan (because you really don't, you only have the SideKick Data Plan...and you're not on a SideKick).
So it looks like if all you do is sms, just pop your sim in your new phone, but for data, you are gonna have to talk to Tmo about switching to another data plan (BIS or BES for the Curve).