: Modifying system-level files like NVRAM carries a risk of hard-bricking your smartphone. Proceed at your own risk, and always maintain a complete system backup via TWRP or SP Flash Tool before executing hardware identity modifications.
Before attempting to write an IMEI, ensure you meet the following requirements:
Navigating to > CDS Information > Radio Information . Selecting the phone SIM slot (Phone 1 or Phone 2). mobileuncle mtk imei write tool
: Users can back up their original IMEI to an SD card and restore it if it gets wiped during a firmware update.
| Error | Likely Cause | Solution | | :--- | :--- | :--- | | This command is not allowed | Root access not granted or SELinux is Enforcing. | Re-root the device or switch SELinux to Permissive (using SELinuxModeChanger). | | AT command fails / ERROR | Wrong modem interface or IMEI format. | Ensure you typed AT +EGMR=1,7,"IMEI" with spaces correctly. Use capital letters. | | Tool crashes on open | Android version too new (10+). | Use the PC-based Maui META tool instead. | | IMEI writes but disappears after reboot | NVRAM is write-protected or corrupted. | Use SP Flash Tool to flash a clean NVRAM.bin file first. | | No Service after writing | Baseband is missing or IMEI is invalid checksum. | Re-flash the modem firmware or use a valid IMEI checksum calculator. | : Modifying system-level files like NVRAM carries a
In the world of Android customization and troubleshooting, particularly for budget-friendly devices, are incredibly popular. However, these devices often suffer from a common, frustrating issue: losing their IMEI (International Mobile Equipment Identity) number after flashing custom ROMs, formatting, or updating firmware. This leaves the device without network service, displaying a "Null IMEI" or "Invalid IMEI" error.
: Insert a space immediately after the "AT" letters (e.g., change AT+EGMR to AT +EGMR ). Phone Not Detected by PC Selecting the phone SIM slot (Phone 1 or Phone 2)
The tool facilitates the "AT Command" method within the CDS (Communication Data Storage) information section. A typical process involves: Opening within the app.
Safeguard your existing IMEI/NVRAM data before making changes.