If your IMEI is valid but you still cannot connect to a network after a reset: IMEI Check - HardReset.info
: Enter your original 15-digit IMEI (found on the box or under the battery) into the IMEI.info checker to ensure the number itself is valid and not blacklisted. Advanced Rewrite Method (MediaTek Devices) : hardresetinfo imeiinfo fix
Troubleshooting and Fixing Common Issues with HardReset.info and IMEI.info Tools If your IMEI is valid but you still
A common problem after flashing a new ROM or performing a factory reset is the "Invalid IMEI" error, which prevents the phone from making calls or connecting to data. hardresetinfo imeiinfo fix