Home Forum Blog Private Support Courses
Our courses are now on YouTube! Start Watching
Hovatek Forum OPERATING SYSTEMS Android [Tutorial] How to fix null or invalid IMEI on Qualcomm devices

[Tutorial] How to fix null or invalid IMEI on Qualcomm devices

[Tutorial] How to fix null or invalid IMEI on Qualcomm devices

 View a Printable Version
 
hovatek
hovatek
hovatek
Administrator
Website
50,949
29-04-2019, 08:22 PM
#1



This guide below explains how to fix Unknown Baseband, NULL or Invalid IMEI on Qualcomm devices. Invalid IMEI or unknown Baseband could make your Qualcomm phone unable to receive network signals, make calls or dial USSD codes, access the internet, etc.

What causes Unknown Baseband / IMEI and issues detecting SIM Cards or Network signal on a Qualcomm phone?


The primary cause is the wiping / corruption of the EFS partition(s). This could occur when you:
  1. Format the phone using Chinese box e.g Miracle Box, Volcano Box, Infinity Chinese Miracle II box etc
  2. Flash a custom ROM or not fully incompatible stock rom / firmware
  3. Tamper with your IMEI using an incompatible IMEI changer
  4. Format your partitions (without restoring) via a custom recovery e.g TWRP


Easy steps to fix Unknown Baseband version, NULL or Invalid IMEI and SIM cards / Network signal not detected on a Qualcomm Android phone


Before you proceed, ensure that your Qualcomm phone has a valid Baseband. If your Baseband is UNKNOWN then download the firmware for your model and flash using QFIL . Flashing the firmware (or at least restoring a good EFS backup) ought to restore Baseband. With Baseband regained, you can then proceed with fixing IMEI

IMEI Repair methods for Qualcomm android phones


QMSL IMEI & SN write IMEI
https://www.hovatek.com/forum/thread-27568.html

QFIL write IMEI
https://www.hovatek.com/forum/thread-26051.html

QFIL backup and restore QCN
https://www.hovatek.com/forum/thread-26016.html

Miracle box backup and restore QCN
https://www.hovatek.com/forum/thread-27560.html

Infinity CM2QLM write IMEI
See the guide @ https://www.hovatek.com/forum/thread-22384.html

Infinity CM2QLM backup and restore QCN
See the guide @ https://www.hovatek.com/forum/thread-22383.html

NCK Pro Box write IMEI
https://www.hovatek.com/forum/thread-22380.html

NCK Pro Box backup and restore QCN
https://www.hovatek.com/forum/thread-22379.html

UMT Pro Box backup and restore QCN
https://www.hovatek.com/forum/thread-26907.html
Learn MediaTek, Unisoc / Spreadtrum (SPD) and Qualcomm Software Repairs @ https://www.hovatek.com/training
Note!
We have a reply schedule for Forum Support. Please try Private Support if you can't wait.
Reply
Reply
 View a Printable Version
Users browsing this thread:
 1 Guest(s)
Users browsing this thread:
 1 Guest(s)
WhTlYt