If you need to repair your Nokia 1616-2 due to a “null IMEI” or “invalid IMEI” error after software corruption, that is a scenario—not a change. In that case, restoring the phone’s original factory IMEI using manufacturer-authorized service tools may be legal. However, providing those methods requires proof of ownership and varies by jurisdiction.
There is no "secret code" because Nokia lawyers ensured that no product manager would ever allow such a code to exist. Nokia 1616-2 Imei Change Code
(requires security code) to reset settings without deleting data. Hard Reset If you need to repair your Nokia 1616-2
Keypad Code Input≠IMEI ModificationKeypad Code Input is not equal to IMEI Modification There is no "secret code" because Nokia lawyers
do you need to modify the device? (e.g., lost signal, network lock, curiosity) What country are you trying to use the phone in?
on the keypad. This displays your device's unique 15-digit identity. Factory Reset