can you put an att go phone sim card into a better phone?

You can put any SIM into any phone. What will make it work is if the phone in question is either
a) the SIM card corresponds with the phone (e.g. AT&T SIM into another AT&T phone)
b) the phone is unlocked.
 
You can put any SIM into any phone. What will make it work is if the phone in question is either
a) the SIM card corresponds with the phone (e.g. AT&T SIM into another AT&T phone)
b) the phone is unlocked.
 
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