Which does the device use (e.g., MediaTek, Unisoc/Spreadtrum)?
Ensure the DB files you are using match your phone's exact model and CPU. Using files from a different model can lead to failure. write imei tool r300001 updated
The phone has lost its "fingerprint"—the 15-digit unique code that tells the network it is a legitimate, safe device. Without this identity, the phone is effectively a paperweight for calling or texting. Which does the device use (e