The answer is simple. No. The only sim cards that can be used in an AT&T cell phone have to be AT&T. Any other kind of sim card will not work. To use a boost mobile sim card, the phone has to be bought from a Boost mobile store or from the boost mobile online website.
To find out the answer to this question, you need to contact your wireless provider. You are not allowed to change sim cards from different providers, however AT&T may be able to help you further.
In order to use a Boost Mobile Sim card with an AT&T phone you must first unlock the phone. Some models have information on the internet on how to do this. The iPhone is the best phone to use though if you are using another carrier because so many people have already unlocked them.
No, you can not. AT&T and boost use 2 different networks that are not compatible at all. AT&T devices are on a GSM network, boost sim card are not made to work on GMS devices.
