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Monday, April 27th, 2020 11:18 PM

Activated SIM, but can't login or use phone

I ordered a new SIM card for my phone number that I want to port in from Boost Mobile, and I selected a prepaid plan for my unlocked iPhone 6s. When I tried to activate the SIM card online, it said that the card had already been activated and showed that the number associated with it is the one I want to port in. It said to login to manage my account, but when I tried to, it said my information was invalid. I tried to change my password, but it still said my info was invalid. I checked the status of my number transfer/port on AT&T's website, and it said that my port has been confirmed by my previous provider.

Also, my phone accepted the new SIM card and shows four bars of service, but I cannot make calls, send texts, or use data.

Accepted Solution

Official Solution

Community Support


229.8K Messages

4 years ago

Hello, @hmachado,


Thank you for reaching out. For assistance in activating your prepaid SIM card and service, please call 800.901.9878.


Have a great week.


James, AT&T Community Specialist

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