You have just encountered the "Null IMEI" problem, also known as "Baseband Unknown." For Samsung users, this is a heart-dropping moment. Without a valid International Mobile Equipment Identity (IMEI), your phone is effectively a Wi-Fi-only tablet. You cannot call, text, or use mobile data.
Before writing anything, go to the "EFS" tab. Click "Backup EFS" and save the .efs file and .rpmb file to your desktop. This is your lifeline. samsung imei repair tool
This is where a enters the conversation. But what exactly are these tools? Are they legal? Do they work on the latest One UI 6.1 (Android 14) devices? And most importantly, can you fix it without turning your phone into a brick? You have just encountered the "Null IMEI" problem,