For free solutions, stick to Maui Meta + SP Flash Tool.
on your PC to ensure the computer can communicate with the phone in "BROM" or "META" mode. Ensure the device has at least 30%–50% battery to prevent it from turning off during the process. Hardware ID: Mt6771 Imei Repair
In many countries, changing an IMEI to anything other than the original factory-assigned number is For free solutions, stick to Maui Meta + SP Flash Tool
Many online tools claim to generate valid IMEIs. Using a non-original IMEI: For free solutions
This is the most reliable, free, and standard pathway used by technicians.
After the procedure, you can verify the repair by dialing *#06# on your device's dialer. If it still shows "Invalid," you may need to reflash the stock operating system to restore system integrity.