The T-Mobile phone needs to be unlocked and then yes you
A Boost Mobile SIM will not work on an ATT phone, even if the phone is unlocked. The technology that Boost Mobile operates on is not compatible with the technology that ATT uses.
An AT&T sim card will not work in an T-Mobile phone as it is locked to particular carrier itself... If you want to put your AT&T sim in your T-Mobile phone you can try unlocking your phone
I don't think boost mobile has sim cards. It's a CDMA network but if they do only if the AT&T phone is unlocked .
Yes as long as the phone is att and has a sim card slot
Yes, provided your ATT phone is SIM unlocked.
you can you just have to unlock it at t-mobil
yes you can but only in an att phone.
If the T-Mobile phone is unlocked meaning the network unlock code has been given to the phone. Contact T-Mobile for the Unlock code after you have an active AT&T account and sim card.
Some cell phones are controlled with a SIM card. You may want to see if your AT&T SIM card will work a T-MOBILE phone.
No. The sim card would not be inter-carrier compatible.
If you mean putting an at&t sim card in a t-mobile phone, no. Sim cards only work in phones that are the same brand.
Yes, just switch the sim card.
Could I put a simple mobile sin card to my HTC from ATT
The sim card will only work in a different phone if the phone is ulocked, in not, no