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How to backup / restore Galaxy S4 EFS?

Rooted your Galaxy S4? Then stay with me on this guide, else feel free to skip this. Without root access, you won’t corrupt or delete EFS. So you are safe.

EFS folder is a place that store all Samsung Galaxy S4 important data like Wi-Fi, Bluetooth MAC address and IMEI (nv_data.bin). Therefore, don’t play with system level folders especially EFS folder if you don’t know what they are. For you info, your Galaxy S4 can’t make voice call if IMEI number is missing. Therefore, it is better to make a backup of Galaxy S4 EFS. Why? Install unstable or poorly cooked Galaxy S4 ROM might cause EFS partition to be corrupted or missing too.

Backup Samsung Galaxy S4 EFS

How to backup / restore Samsung Galaxy S3 EFS?

You can ignore this article if you did not root Samsung Galaxy S III. Why? Because you need root access to backup and restore Samsung Galaxy S3 EFS. And you don’t need to worry about EFS at all when not rooted.

What is EFS? It is a place that stores your Android smartphone important data like Wi-Fi, Bluetooth MAC address and IMEI (nv_data.bin). Do take note if you are a frequent ROM / firmware flasher or rooted your Android phone. Installed unstable poorly cooked ROM might cause EFS partition to be corrupted or missing. Which will make your Samsung Galaxy S3 fail to make voice call due to missing IMEI number. So better to make a backup of your Samsung Galaxy S3 EFS partition.

HC-kTool

How to backup / restore Samsung Galaxy Note 2 EFS?

Feel free to ignore this article if you did not root Samsung Galaxy Note 2. Because you can’t backup and restore Samsung Galaxy Note 2 EFS without root access. And you don’t need to worry about EFS at all when not rooted.

What is EFS? It is a place that stores your Android smartphone important data like Wi-Fi, Bluetooth MAC address and IMEI (nv_data.bin). Do take note if you are a frequent ROM / firmware flasher or rooted your Android phone. Install unstable or poorly cooked ROM might cause EFS partition to be corrupted or missing. This will make your Samsung Galaxy Note 2 fail to make voice call due to missing IMEI number. Therefore better to make a backup of your Samsung Galaxy Note 2 EFS partition.

Backup Samsung Galaxy Note 2 EFS

How to backup / restore Samsung Galaxy S2 EFS?

What is EFS? It is a place that stores your Android smartphone important data like Wi-Fi, Bluetooth MAC address and IMEI (nv_data.bin). Do take note if you are a frequent ROM / firmware flasher or rooted your Android phone. Installed unstable poorly cooked ROM might cause EFS partition to be corrupted or missing. Which will cause you fail to make voice call due to missing IMEI number. So better to make a backup of your EFS partition. The easiest way to backup EFS ~ just copy the whole EFS folder with Root Explorer to SD card. But some said this method is not good during EFS restore. So better use EFS backup / restore tool like kTool by Hellcat. kTool will backup the whole EFS partition (including files read / write permission) for you with 1 click. Note – root access is required.

kTool

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