If you are installing a lot of custom firmware and doing all sorts of hacks on your Samsung Galaxy S6 Edge Plus, we suggest backing up that IMEI too.
This IMEI Backup tool for Galaxy S6 Edge Plus will make backup of your EFS partition which is very useful when you lose IMEI. Using the tool is very easy – just click on the icon on right side to make EFS backup.
The backup will be stored on the micro SD card/MyEFS folder. To use it, you must root your Galaxy S6 Edge Plus.
This is indeed a very useful tool as many times, one can loose IMEI due to bad flashing or wrongly done system modification. It can also be corrupted by downgrading the stock ROM. So if you flash an older version of ROM, it can corrupt EFS.
To remove the IMEI backup tool, install safemode_exit APK as regular app. Open from drawer – Grant su permission – Reboot when asked.