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I installed ATT can not use. But I have forgotten the original account number, and the mobile phone number has been changed to ATT
Looking at the screen shot the carrier is AT&T so try one of their stores. Most carriers won't unlock phones until they are paid off.
Looking at the screen shot the carrier is AT&T so try one of their stores. Most carriers won't unlock phones until they are paid off.
I bought it on Sprint and it's now T-Mobile, I installed the ATT card and it showed ATT
What sim card is installed? If it's an AT&T sim it won't work since the phone is locked.
The phone needs to be paid off and usage requirements met in the link below.
https://www.t-mobile.com/support/devices/unlock-your-mobile-wireless-device
Hello Mr. 28. I am using my device i phone 12 imei 354696408735170 my phone is locked I can't use my phone for another carrier. I do not speak english. I'm sorry to bother you but would love to have you check and unlock the phone for me.
Hello Mr. 28. I am using my device i phone 12 imei 354696408735170 my phone is locked I can't use my phone for another carrier. I do not speak english. I'm sorry to bother you but would love to have you check and unlock the phone for me.
I don't work for Tmobile. You need to be a customer of Tmobile USA and meet the requirements in the link below.
https://www.t-mobile.com/support/devices/unlock-your-mobile-wireless-device
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.