Samsung Galaxy J series is the budget series from Samsung for its offline buyers. Samsung had discontinued the same a few years back. In 2016, Samsung launched its Samsung Galaxy J7, and it was a mid-range device from the brand. The device had decent specifications for the price at which it was launched. But, since was using TouchWiz UI those times, their phones were laggy. So, unlocking the bootloader and rooting the device will improve the speed of your phone. It will also help you to customize your device. But, let us look into the specifications of the same.

Samsung Galaxy J7

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Samsung Galaxy J7 Specifications

The Samsung Galaxy J7 has a 5.5 inches Super AMOLED plus display with HD+ resolution and large bezels to both sides. It has a pixel density of 267 Pixel Per Inch (PPI) and a screen-to-body ratio of 69.6 percent. The internals of the old Galaxy J7 features the in-house Exynos 7580 SoC, which is built on the 28nm process. On the GPU side, it sports the Mali-T720MP2 GPU. On a lighter note, some versions of the device came with the Snapdragon 615 SoC (28nm), which pairs the Adreno 405 GPU. We can see that the device is equipped with 1.5GB of RAM and 16GB of eMMC 5.0 storage. Since it is an old device, it has a dedicated slot for expanding the memory. The device was running on Android 5.1 (Lollipop) when launched. However, Samsung pushed two major updates for the device, i.e., Android 6 (Marshmallow) and Android 7 (Nougat).

But Samsung was using their old TouchWiz UI in this phone, which slows down the device. It was the issue of most Samsung phones of that time. Coming to the optics of the Samsung Galaxy J7, it sports a single rear cam. It is a 13MP sensor with an f/1.9 aperture value, a 28mm wide lens, and supports Auto Focus. To the front, the phone has a 5MP sensor with an aperture value of f/2.2. All this is backed by a small 3,000 mAh battery and gets support for 10W fast charging tech. Connectivity options include Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot, Bluetooth 4.1, A2DP, GPS with A-GPS, GLONASS, NFC (Only for Snapdragon model), FM radio, RDS, recording, and micro-USB 2.0. Sensors include Accelerometer, proximity, and ANT+. The device comes in three color options, i.e., White, Black, and Gold.

Unlock the bootloader of the Samsung Galaxy J7?


Steps for unlocking the bootloader

  • For, this start the process by installing ADT on your PC.

Download ADT from the above-given link and install it with the on-screen instructions. For more information on configuring the same, you can visit the above-given website.

  • Now, download and install MODACO SUPERBOOT on your PC. 

Like ADT, you can download the same from the given link. After downloading, extract the same to continue.

  • If you have enabled USB debugging on your device, connect your device via USB cable to your PC. 

If you don’t know how to enable USB Debugging, go to About Phone and tap 7 times on Build Number to enable Developer Options. Then, go back to Settings and then to Developer Options and enable USB Debugging from there.

  • Give authorization to your device by tapping on the pop-up message on your device’s screen, which will come once you connect to your PC.
  • Now, go back to the MODACO SUPERBOOT folder, which you have extracted before.
  • Then, open Command Prompt or Windows PowerShell by holding the right button of your Mouse and Shift Key. You can also type CMD in the address bar of the folder.
  • Now, enter adb-windows reboot bootloader in the Command Prompt, and your device will reboot to bootloader.
  • Finally, enter fastboot-modaco-windows oem unlock command in the window. Do note that your device will flicker for a while and ask you to confirm the unlocking process. 
  • Once the process is completed, your device will perform a reboot.

Install TWRP in your Samsung Galaxy J7


  • Take a backup of your data.
  • 60% + battery backup.
  • Enable USB Debugging and OEM unlock on your device.
  • Download and install Samsung Odin Flash tool.
  • Also make sure to download and install Samsung drivers.
  • Download TWRP file.
  • Boot your device into Download mode before doing the steps. For this, turn off your device first and then hold the following keys Power + Volume Down + Home.

Steps for installing TWRP on your Galaxy J7

  1. For this, first, open the Samsung Odin Flash tool, which you have installed earlier. Do note to open Odin to run as administrator.
  2. Make sure that your device is booted into Download mode. Then connect your device to the PC with the USB cable.
  3. Then you can see a box to the mid-left section, which comes with a little blue color, and a description that says as Added. It means that your device is successfully connected.
  4. Select the AP slot and then choose the tar file of the TWRP file you have downloaded before.
  5. Then, make sure to uncheck the Auto Reboot option that you can see in the top section and start the flashing process.
  6. The process will be finished in a few minutes. Once the process is completed, the box will be lighting up in green.
  7. Finally, make sure to allow TWRP to modify the system. For this, you must swipe to allow changes when TWRP shows it. Else, your OS will be replaced by TWRP recovery after you reboot your device. Continue the below-mentioned steps to root your device.

Root your Samsung Galaxy J7


  • Download SuperSu and copy it to your device. 
  • 60% + battery backup.
  • Make sure to take a backup of your data.

Steps for rooting Galaxy J7

  1. Download and transfer the Supersu zip file to the root storage of your device.
  2. Now reboot your device into TWRP recovery mode. For this, you can use keys, i.e., hold Volume Up + Home + Power keys.
  3. Once TWRP loads, tap on the Install option and then find the Supersu zip file that you have downloaded before.
  4. Finally, tap on the file and then swipe to the right on that arrow, and it will start the process of flashing.
  5. Once the process is completed, head back to Main Menu and tap on Wipe. Now select the Advanced menu and tick Dalvik and Cache and wipe it.
  6. Now, reboot your device once the process is completed. Do note that it may take some time to boot.

There you go, you guys have successfully unlocked the bootloader, installed custom recovery (TWRP), and also rooted your Galaxy J7. You can install a lot of Xposed modules after rooting the device. Please do share the article with the other users of the device. 

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