in this Tutorial i’ll show you how to backup and restore QCN Fro Qualcomm phones.
QCN Backup for fix these problems
imei null fix | unknown Baseband Fix | Network Fix | no Service Fix
And all other problem fix with QCN backu
1st read qcn from working phone and then restore this backup on faulty Phone it will be done.
How to Enable Qualcomm Diagnostic Mode: