Qin F21 pro T-Mobile US Version 4GB 64GB phone 样式:4GB+64GB The operating system is Android

The operating system is Android 12

andsome functions or APP display are in English

Platform:MTK6761

Brand: Qin

LTE Bands 2

Qin F21 pro T-Mobile US Version 4GB 64GB phone 样式:4GB+64GB The operating system is AndroidIMPORTANT Due to this device being configured to work in the United States, there are two things that shouldn't be done with this device. First, your security PIN code should not be longer than 4 digits. Secondly, DO NOT factory reset. So far devices that have factory reset or have longer PIN codes become unusable. We are investigating the cause of this and hope to have a solution. However In the meantime, we ask you that you don't do those things. If