
* This tutorial applies to only original Samsung phones.
An unknown Baseband is as a result of a corrupted EFS partition. The EFS
holds the phone's IMEI and other radio information. To check the
phone's Baseband, navigate to Settings > About > Baseband. Check
the IMEI by dialing *#06#
You'll usually know you've been hit by the NULL IMEI / Unknown Baseband when you observe:
* Bluetooth address is unavailable
* WIFI connection...