New Member
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2 Messages
Plugged new SIM into old phone, now my new SIM doesnt work in my new phone
I got a refurbished Samsung Galaxy S9 because my old phone is being discontinued for the 5G network upgrades. With this phone came a new SIM card, plugged it in the S9 and worked fine with service. Out of curiosity I plugged in the new SIM card into my old phone to see if it would also get service as well but it did not. When I took the new SIM out and put it back in the S9, I now no longer have service. Did my old phone deactivate my new SIM by chance?
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JefferMC
ACE - Expert
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33.1K Messages
2 years ago
Yes, it deactivated it. It wasn't by chance. AT&T deactivates any SIM when placed in an unsupported phone. Put it back in the S9 and contact AT&T support to get your account reactivated.
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sandblaster
ACE - Expert
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64.6K Messages
2 years ago
It didn’t actually deactivate the new SIM card but it did suspend service on your line. You would need a new SIM card if the SIM card was deactivated. As noted, you need to call to get service restored.
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BadSIMcardGuy
New Member
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2 Messages
2 years ago
Thanks for the replies. Yeah looks like service was suspended because of it detecting an obsolete device (my old phone). I called support and they re-activated it. Thanks @JefferMC @sandblaster
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