When you begin to use Root apps, Other less control non-root required apps, May not give you satisfaction. Because, In Root apps, You can control most everything in your mobile based on the features app developers provide. So, Even if you buy a new mobile, You always go for root access. Samsung Galaxy A21s comes with Android 10 based One UI 2.0. The UI is well optimized for the hardware. Samsung provides better features and apps with this new UI. But when you are a regular root apps user or Developer, then you can root your Samsung Galaxy A21s Android 10 using the below method since we didn’t use custom recovery in this process. You can’t install custom ROMs. But the following method will be work with most of the root apps.
Compare with standard other root methods, this method has additional steps. So, You should care a little bit when you do the process. After root, you will lose official updates. You have to update your mobile manually. So, Before proceeding with the process, you should know why you need to do it. If you are a regular user, you can try some alternatives for your purpose that don’t require root. When you are a regular root apps user and developer, you can follow the below guide to achieve root on your mobile.
Should you need to Root your Samsung Galaxy A21s Android 10 version?
It would be best if you had a strong reason for rooting. Samsung Galaxy A21s already comes with Android 10 and is already optimized. You have More than Enough 2-6 GB RAM to use daily apps without lag for years. Yes, I Know, RAM maybe looks like not enough because of the Samsung Heavily customized OS. But, Trust me, One UI is far better than other Custom Skin OS. You can use this device without lag for years until Samsung mess with some Bloatware. But beyond, this not go reasons you are addicted to some root apps, or you are a frequent user of some Custom OS, you can proceed further. But if you want to root because everybody is doing, I advise you, don’t root If you didn’t have any experience. For regular users, It can become a Nightmare.
How to Root Samsung Galaxy A21s Android 10 One UI 2.0
Thanks to the developer- cldkrs for the Root method and topjohnwu – this genius is the one who discovered and maintained Magisk. Samsung Galaxy A21s International variants come with a flexible bootloader. It means that the smartphone can be easily rooted. The device can also accept installing TWRP recovery or any other custom recovery file/app. Don’t try with Snapdragon US Variants like Verizon devices. They come with a locked Bootloader.
But In the below method, we are going to Root this device by using Magisk. You can install Official TWRP using the official app when it is released. TWRP recovery is a custom recovery file installed on your devices because you can root them successfully. This article explained the easiest method to follow and install Magisk on Samsung Galaxy A21s. However, the tool required for rooting this device is the Magisk App.
You can flash TWRP once it is available. With the help of TWRP Recovery, you can quickly flash the Custom ROMs into your Samsung Galaxy A21s. Before sharing the tutorial, you may want to know that you can easily install any root apps with the Magisk present on your device. Does it seem complicated? Relax, everything will be explained briefly in bullets.
Things to check out for;
Check your device model number.
- You should back up your current files and data- Full Data Loss Process (save them on external storage).
- Install Latest Magisk Manager.
Make sure your device battery is above 50%
- You cannot use Samsung Pay, Secured folder, and some official apps from Samsung.
- You can’t update your firmware; to get new firmware, you must follow the below steps with the latest firmware.
- Read the full tutorial before the process.
1. Unlock Bootloader
Enable USB Debugging Mode and OEM Unlock on your mobile. To do this, go to settings >>> about >>> Tap on the “Build Number” 7-10 times consistently to enable “Developer Options,” then go to the “Developer Options” and enable USB Debugging Mode and OEM Unlock. There is no complicated process in the Samsung Galaxy A21s.
- Switch off your device. Enter into Download Mode-> Volume Down + Volume Up+ Power Button and Connect your mobile with PC using USB Cable. When the Download mode warning screen Appears, Press the Volume Up button to unlock Bootloader.
- The above process will wipe your user data. After setup your device, Please recheck the OEM Unlock in the settings. Sometimes It Will Lock Again.
2. Preparing Patched Boot Image file
Download and install the Samsung USB driver to your computer system.
Also, download the ODIN software. Select the above Oreo version in the ODIN list. Install ODIN on your PC.
- Download Samsung Galaxy A21s Android 10 Firmware and save it on your PC. Your Current OS version and Downloaded Version AP and CSC should be the Same.
- You can use Phone Info to know your firmware version.
- Download 7Zip-ZS, LZ4, and Install both on your PC. Extract the files in downloaded firmware using 7Zip-ZS. You will get four files. Click on the AP File and Extract again. You will get some data along with the boot.img.lz4.
- Copy the boot.img.lz4 and Vbmeta.img.lz4 to LZ4 Installed folder. Convert the lz4 file to a .img file by dragging the .img file to the lz4 application file. You have to drag the file to that application. The script will automatically convert the file to .img format. After the conversion, Copy the boot — img file to your mobile. Leave Vbmeta in the PC folder.
- Download Magisk Manager (Download Latest version) or Magisk canary and Install it on your mobile. Open Installed Magisk and Select Install in Magisk; it will ask For a zip file and Patch Boot Image File. Select the Boot Image file.
Navigate to your copied Boot Image File and patch the file.
- Wait for the process to complete; in the end, you will get a magisk patched .tar file. The .tar file will be in the same folder where you have the Stock firmware file. If you didn’t get the .tar and you got the .img file. No problem. Copy this file to your PC. We can convert the data there.
- When you get the .img file, Open the installed 7zip app. Navigate the magisk patched img file and select Add, Choose .tar format and choose ok. Now we got ODIN flashable boot.tar file. In the .tar, you can find a boot. img.
3. Flash Patched Boot.tar using ODIN
- Copy boot.tar and Vbmeta. img files to your PC. We already leave the Vbmeta. img file on PC. Drag the file into the boot.tar file. Now you can see there are two files within the boot.tar file. Don’t extract the data. The two files contain a single .tar file that should be flashed using ODIN.
- Unlock your screen lock. There should be no fingerprint, PIN Lock, Wipe. Set No lock in the settings.
- Switch off your Mobile. Enter into Download mode->Volume Down+ Power Buttons and Connect Your Mobile To PC via USB Cable; after Samsung Logo Appear, Release all keys.
- After entering into Download Mode, it will say Warning; press the Volume Up button to continue.
- Launch Odin Application.
- It Will Show the message added.
- If you did not get this message, Repeat the above steps.
- After Getting Added Message Select, AP/PDA Button, then Browse for the patched boot.tar file, select it. We have to flash only the magisk patched boot image file. Un-Tick the Auto-Reboot.
- Press Start wait for the tasks to complete. After the process complete, Press the Volume Down+ Power button to exit Download mode. When the screen goes off, Immediately Press Volume Up+ Volume Down + Power buttons to boot into Recovery mode.
- After entering into Stock recovery mode, Go to Wipe Data/Factory Reset and Select Yes to wipe data. It will erase your saved data on your device. Don’t Boot into OS. Read below Boot stages before booting.
Boot into Rooted OS
- Press and Hold Volume Up + Power buttons, release all the keys once the Bootloader warning appears. You have to set up your device like a new device. You can select the root status using the Root Checker.
- Stock Recovery Boot – Press and Hold Volume Up + Power buttons, release keys while you hold the Volume Up key.
- You will see Magisk Manager in your App drawer. If you can’t find the app, you can install Magisk Manager on your mobile.
In my opinion, you don’t need to root your Samsung Galaxy A21s Android 10 version. If you thought you could Improve Performance By root; With the Exynos 850 Octa-Core processor and 2-6 GB RAM, your device can perform well. If you don’t know how much RAM you need, You will never use this much RAM. It would help if you did not Boot into Normal OS Booting by pressing the power button after firmware flash. It will boot you to a Non-Rooted environment.
When you accidentally urged and boot frequently, Don’t panic; after setup everything, switch off your device and boot into Rooted OS using above mentioned keys. If you root your device because of the battery drain issues, you can optimize your battery without root. Beyond this, if your purpose is to Disable Bloatware apps, you can do that without using this method. When you have any suggestions or doubts, comment below.
Selva Kumar is an Android Devices Enthusiast, Who Can Talk and Write About Anything If You Give a Hint About the respective devices. He is a Computer Science Graduate, Making His Career towards this Technology. He is always eager to try new Android devices — not only Software level but Hardware-level Also. Beyond this, He is a Good Swimmer, Guitarist.