Samsung Qualcom series phone happens some time while unlock or iMEI repair after if bad-lucky to see no network or 3G, 4G/LTE not work properly.
Yep it can be repair if phone is surly software fault or NVM. Not matter which box or unlock tool you using, It’s support which tool enable to write NVM with supported model. Try to given below NVM to fix some of supported model.
Support list of model:
- Samsung Galaxy S4 i9505
- Samsung Galaxy S4 M919n Metro PCS
- Samsung Galaxy S3 i737 Rogers
- Samsung Galaxy S3 i747 AT&T