How To

How to Backup/ Restore EFS and IMEI from/ to your Samsung Android Phone – Beginners Guide

Android is the deadliest platform if you are the one for all those who use custom ROMs and root their smartphones. So for all those who have recently complained about losing their IMEI numbers can make use of this tutorial to backup or restore the IMEI / EFS files in their android smart phones. While there are tons of articles which are there in the Internet world which promises you to restore the IMEI, Serial numbers etc., but if you are unable to restore the IMEI with this app then it’s most likely that you will be able to restore the device with the help of Z3S toolbox which is there with most of the advanced mobile phone repair shop.

EFS partition is one of the highly sensitive area in Android, especially in the Samsung smartphones. EFS comes with the sensitive information like IMEI, WIFI MAC Address, Baseband, Product code, System ID, NV Data, version etc. So if you flash the firmware in an improper way, then it’s highly possible that your IMEI or serial number will be messed up. So if your device loses IMEI or serial number then your device won’t be able to latch with the network. So below list of device are the ones of whose you can backup / restore the EFS folder.

Supported Devices:

  • Galaxy S3 GT-I9300
  • Galaxy S3 LTE GT-I9305
  • Galaxy S4 LTE GT-I9505
  • Galaxy S4 GT-I9500
  • Galaxy Note 2 GT-N7100
  • Galaxy Note 2 LTE GT-N7105
  • Galaxy Note 3 SM-N900
  • Galaxy Note 3 LTE SM-N9005
  • AT&T Galaxy S5 SM-G900A
  • Galaxy S5 LTE SM-G900F
  • Galaxy S5 (Exynos) SM-G900H
  • T-Mobile Galaxy S5 SM-G900T
  • Galaxy S5 SM-G900I
  • Sprint Galaxy S5 SM-G900P
  • Canadian Galaxy S5 SM-G900W8
  • Sprint Galaxy S3 SPH-L710

Procedure to Backup/ Restore EFS Folder from/ to your Samsung Android Phone:

  • Download the Samsung Tool Application and once downloaded, open the same to follow the simple to follow on screen instructions to backup or restore the EFS folder.

Samsung Tools

  • Its highly advisable that you should store this EFS folder in the safe location so that the same can be used when required. Most importantly, you should make sure that whenever you are flashing the custom ROM firmware, you follow all the necessary instructions to make sure that you don’t mess up with your device.

Do let us know in the comments section just in case if you face any issues about EFS backup/ resotre.

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