Can I use an AT&T GoPhone sim card on an iPhone 4s?

Ok, so the iphone i want to use with a gophone sim card is a from sprint and i want to know ifi t would be compatible with a gophone sim card from att, i found this iphone mcdonalds i did not buy nor steal it the iphone was disabled so i took it home and set it up on itunes with my computer and it works fine except i can only use the Wi-Fi on (every time i turn it on it says that the iphone can't be activated, judt letting you guys know)

No, att sims are not compatible with sprint.
att is a gsm network
sprint is cdma.
if you need a unlocked att 4s, email me

You might be able to follow this guide:

http://www.dargadgetz.com/how-to-use-iphone-5-on-att-gophoneprepaid-with-4g-data-speeds-payasyougo/

But I think that only works for GSM version. You can't put a sim into a sprint iphone.

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