EFS Data Archives - Techtrickz

Backup OnePlus One EFS Data (Restore It When SIM Not Detecting Issue Occurs)

July 8, 2015
Kannan
Download, How to

If you are one of those who often tryout custom ROMs on your OnePlus One, you should take care of EFS data of your device, because EFS data contains all networks related things such as IMEI number, Wireless MAC address, baseband version, etc. Once it is lost, you will not be able to use your phone on any mobile network. Also, you cannot use Wi-Fi, Bluetooth, etc. Therefore, you should always make a backup of the EFS data before installing a custom ROM.

Backup Xiaomi Mi4i EFS Data and Restore it to Fix IMEI & SIM Not Detecting Issue

June 17, 2015
Kannan
How to

Every Android smartphone has EFS or NVRAM data, which contains all data related to the phone, such as IMEI number, Wireless MAC address, product code, baseband version, system ID and NV data. If it gets corrupt, you cannot use your phone with any mobile network as well as lose all the connectivity features of the phone such as Wi-Fi, Bluetooth, etc.

Backup and Restore EFS Data on Samsung Galaxy S5 (How to Guide)

April 16, 2014
Kannan
How to, Mobile

If you are a Samsung Galaxy phone user, and would like to explore the limits of your device by rooting, installing custom recoveries, custom ROMs, Mods and other tweaks should conscious about EFS data. Flashing an invalid custom ROM, invalid recovery, invalid mod or applying any inappropriate things can corrupt your device’s EFS data, so you will lost all the connectivity features of your device. That is, you cannot use SIM card, Wi-Fi or Bluetooth, etc.