If you are facing an "Invalid SIM" or "Registration Failed" error, the safer and legal routes include:
Here's a step-by-step guide on how to change the IMEI on your Nokia 105 TA-1203: nokia 105 ta 1203 imei change code free
*#06# showed the current IMEI. He typed it in, and the 15-digit number blinked back at him like a digital fingerprint. If you are facing an "Invalid SIM" or
Q: What are the risks of changing my IMEI? A: The risks of changing your IMEI include voiding your warranty, network blacklisting, and potential security risks. and potential security risks.