In most countries, changing an IMEI to bypass a blacklist (stolen status) is considered a serious crime. Risks of Attempting an IMEI Change
Altering this number—often referred to as "unblocking"—is frequently associated with bypassing security measures on stolen hardware. Technical Reality of the Nokia 1200 nokia 1200 imei change code
These codes do nothing related to reprogramming the serial number. Nokia (and later Microsoft Mobile) never included a public dialer code for IMEI rewriting because that would be a security disaster. In most countries, changing an IMEI to bypass
Changing the IMEI (International Mobile Equipment Identity) number on a mobile device, including the Nokia 1200 , is generally not possible through a secret code in many jurisdictions. Nokia (and later Microsoft Mobile) never included a
Even with these hardware boxes, completely changing a Nokia 1200 IMEI to a different, arbitrary number required altering data in the phone's EEPROM or UEM (Universal Energy Management) chip, which often caused the phone to permanently lock up or "brick" due to built-in security checksum mismatches. Legality and Risks of Changing IMEI Numbers