353814082088565 My phone is locked and I can't use other operators. I don't speak English and I went to the Irvine business office and they couldn't communicate. hope to help me unlock

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.

gramps28 wrote:

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.

Yenle wrote:

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