If you are facing issues with your connectivity, consider these legitimate troubleshooting steps:
A failed firmware update or a hard reset gone wrong can lead to a "Null" or "Unknown" baseband/IMEI, effectively turning the phone into a Wi-Fi-only tablet because it cannot authenticate with cellular towers. nokia 1.4 imei repair
In most countries (including the US and UK), changing or tampering with an IMEI is If you are facing issues with your connectivity,
Start the flashing process. Once completed, restart your device. restart your device.