Will a tmobile sidekick work with my at&t sim card?

[ALANR]

it might sound like a stupid question but ive heard of "unlocked phones"

 

[angelK]

Yes the sidekick can work with an AT&T sim card. The sidekick must be unlocked.

 

[Unregistered]

need more info

how do you unlock the phone

 

[kiran11]

HI!!!

how do you unlock the phone

Unlocking can be done by many methods...........in that you can use the codes because its safe for your mobile..........
Get the unlocking instructions and code for your mobile from this site Mobile Unlocker , here it can be done without any difficulty...........