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How can I tell if a straight talk phone can be used with an at&t sim card.

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How can I tell if a straight talk phone can be used with an at&t sim card.

My mom had a Samaung Galaxy S7. She brought it at Wal-Mart and has had it for 2 years. I wanted to switch her to my At&t plan. At&t gave me a sim card for a line I already have. When I put the sim card in her phone it says no network available.  Please help. 

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Accepted by ATTKevin
‎06-14-2019 9:51 AM

Re: How can I tell if a straight talk phone can be used with an at&t sim card.

Hi @Kmennicucci

 

Thank you for reaching out to us. You can check to see if a device will work using the IMEI number. If it's compatible, it may be that the device SIM wasn't activated correctly. You can activate your SIM card here.

 

Please feel free to reach out if you have any further questions.

 

Darais, AT&T Community Specialist


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