The International Mobile Equipment Identity (IMEI) is a unique 15-digit number that identifies your device on a cellular network. On the Nokia 7.1, the IMEI can become "Invalid," "Null," or "0" due to: Software Corruptions:
Here’s a balanced review for (typically a software/service that restores null/unknown IMEI after flashing or firmware corruption): Nokia 7.1 Imei Repair
SN Write Tool is another popular third-party tool for repairing IMEI on Nokia devices. Here's how to use it: The International Mobile Equipment Identity (IMEI) is a
This method writes IMEI to the modem’s runtime memory. It survives a reboot but may revert after a factory reset or OTA update. the IMEI can become "Invalid
Accidental deletion of the EFS partition during custom ROM installation. 2. Preliminary Diagnostics
Avoid “free IMEI generator” websites. They often provide invalid checksums or malware.