How to Unlock Bootloader on Samsung Galaxy M21

The Samsung Galaxy M21 is one of the budget segment entry-level handsets which is a successor of the last year’s Galaxy M20 model. The device looks almost identical to the Galaxy M20 except for a few changes. Now, talking about the changes, you will notice a triple rear camera, the Infinity-U display, a giant battery, etc. Today we will guide you on how to unlock Bootloader on Samsung Galaxy M21 if you want to install any custom Recovery or want to root your device. Then the first step in doing so is unlocking the bootloader of your device. So today, in this article, we will guide you through the process of unlocking the bootloader on Samsung Galaxy M21.

Samsung Galaxy M21 is the latest smartphone by Samsung. With decent specs and unique design, Galaxy M21 is the center of attraction of major developers and Android enthusiasts. Being an Android enthusiast or a developer, you might want to unlock the bootloader of your Samsung Galaxy M21. After unlocking the bootloader of your device, you can install a custom recovery, root your device, install custom ROM and much more.

What is Bootloader?

A Bootloader is a code that runs when we turn on our device. This code initializes some hardware and then loads the kernel and ramdisk, and gets the boot process going. So this process is known as bootloader. The same concept applies to all the technical stuff such as laptops, PC, Smartphones, and any such device. Every Android OEM manufacturers lock the bootloader even though it is an Open Source. So if you want to try any CUSTOM ROM, it is impossible to load the CUSTOM ROM without the Unlock Bootloader.

Device Specification

Before heading to the process of unlocking bootloader of Galaxy M21, let’s take a quick look at the device specification:

The smartphone comes with a 6.4-inches Super AMOLED display with 1080×2340 pixels resolution. It features Corning Gorilla Glass 3 protection, 420 nits max brightness. It’s powered by an octa-core Exynos 9611 SoC, coupled with Mali-G72 MP3 GPU, 4GB/6GB of RAM, 64GB/128GB of onboard storage along with a dedicated microSD card slot.

It packs a triple rear camera setup of a 48MP (wide, f/2.0) + an 8MP (ultrawide, f/2.2) + a 5MP (depth, f/2.2) lens that features PDAF, HDR, Panorama, an LED flash, etc. The device sports a 20MP selfie camera (wide, f/2.0) that features HDR, Portrait mode, etc. It’s backed by a 6,000mAh battery with 15W fast charging support.

In terms of the connectivity options, the device has dual-band Wi-Fi 802.11 a/b/g/n/ac, Bluetooth 5.0, a 3.5mm audio jack, GPS, A-GPS, GLONASS, BDS, FM Radio, RDS, FM Recording, USB Type-C port, etc. On the other side, the handset packs a rear-mounted fingerprint sensor, gyro, an ambient light sensor, an accelerometer, proximity, compass sensor, etc.

Steps to Unlock Bootloader on Samsung Galaxy M21

1. First of all, Enable Developer Mode on the Galaxy M21  
2. Launch the Settings application
3. Scroll down and tap on the Developer Options option
4. Toggle the OEM Unlock option on 
5. Confirm by tapping the enable option. 
6. Power off your device. Press Volume Up + Volume Down and plug in your device to a PC to boot into download mode
7. When you enter download mode, Long press Volume Up button to unlock the bootloader. Remember this process will erase everything on your device.
   

   Note:

   Unlocking the bootloader will wipe all your data from your device. Make sure to take a complete backup of your phone before doing the next step.
   
8. Your device will reboot.
9. That’s it! You have unlocked the bootloader on your Galaxy M21.

So, guys, this is how you can unlock the bootloader on your Samsung Galaxy M21. After unlocking the bootloader, you can flash custom ROM, install TWRP, or any other task you want. If you are facing difficulty in any step, then let us know via the comment box below. We will be happy to help you out.