Professional-grade tools are typically required to access the device's deep system partitions (such as the EFS partition) to perform repairs.
Find your Samsung phone or tablet's IMEI, model, or serial number samsung imei repair tool
Without a valid IMEI, a Samsung phone cannot register on a cellular network, leading to a total loss of ability to make calls, send texts, or use mobile data. samsung imei repair tool
Unsuccessful firmware flashing, rooting, or system updates can sometimes "wipe" the IMEI, leaving the device unable to recognize its own identity. samsung imei repair tool
Under normal circumstances, a user cannot and should not change their IMEI. However, several technical issues can necessitate a repair: