I bought a Samsumg S3 - SGHG I747 from AT & T no plan and didn't work Good afternoon! I bought a Samsumg S3 - SGHG I747 from AT & T no plan at Best Buy and put the carrier's SIM of Brazil. After this occurs the following error "SIM network unlock PIN". How should I proceed to use?
Thank you Marcia

Question

Mumont · Accepted Answer

Hi Marcia,

Since the phone you purchased is locked to AT&T's network only a SIM card from that carrier will work. You may contact your provider/carrier to see if they have a way to get this to work on their network or unlock this. It may be possible to unlock the device by rooting the device. Please be aware that rooting will typically void any warranty on the phone, but may be your only route to work with your carrier.

Samsung · Answer

This would be best addressed by the carrier. We can't determine which SIM cards are compatible in different regions, and they would be able to explain further.

We might also recommend contacting the Best Buy mobile team at your nearby retailer.

Thanks for considering Samsung products.

--Mr.Samsung

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