#0000#). For official troubleshooting of "Invalid SIM" or network errors, refer to the HMD/Nokia Support Step-by-Step Guide: Changing IMEI on Nokia 150 RM-1190
The IMEI serves as a unique digital fingerprint for every mobile device. nokia 150 rm 1190 imei change code
While you cannot change the IMEI via a code, you can use these official shortcuts to manage your device: – Displays your device's unique IMEI number. *#0000# – Shows the software version and build date. #0000#)