You may want to tweak the configuration on tab s3 and install Custom ROMs on you tab s3, but you can only do that only by rooting the device first. So I covered how to install TWRP on galaxy Tab s3 and how to root Galaxy Tab s3.
Make sure bootloader is unlocked.
A computer system (PC)
Make sure you have 70% charge of more then that.
Follow all steps correctly otherwise you will end up with a bricked phone..
Odin V3.10.7 Download and Install on you PC.
Samsung USB Drivers:- Download And Install on Your PC.
TWRP Recovery For S3 TAB. There are two different variants make sure to get a suitable one for your device
Boot image Patcher Download and Move the File to SD Card — no-verity-no-encrypt_ashyx.zip
Steps to Enable OEM Unlocking.
Navigate to Setting –> Developer Options and Enable OEM Unlocking.
If You not able to Find Developer Options, Don’t worry Follow this easy Steps.
Setting –> About Phone –> Software Info –> Tap 7 time on Build Number. You will See developer Mode is Enable.
Steps to Flashing TWRP Recovery on Samsung Galaxy Tab S3.
Power off Your Tab S3, Then Press and hold Power + Volume down + Home.
A message will be displayed, Just press Volume Up to enter into download Mode.
Now, Open Odin3 on your PC. and connect your Tab 3 with PC.
You have change some Setting, Under the Options tab Uncheck Auto Reboot.
Next, click on the AP Button and load the TWRP.tar file.
Click On Start.
Once the TWRP recovery flashed. Boot your Tab S3 into TWRP Recovery.
Don’t Know How to Do That?? Yes’ then i am here to tell you.
Hold Power + Home + Volume up. to get into TWRP Recovery Mode.
Once you get into TWRP recovery Release the all Button.
That’s it! Now You have Installed TWRP recovery on Samsung Tab S3.
How to Root Samsung Tab S3.
Boot into TWRP Recovery, To do Hold Volume Up + Home + Power at the same time until the Samsung Tab S3 boots in TWRP recovery Mode.
In TWRP Recovery Mode, first make Backup of your all data using TWRP.
Now, tap on Install, And choose the SuperSU.zip file.
Now, Swipe to Install SuperSU.zip.
Again, Choose the no-verity-no-encrypt-ashyx.zip File.
Now, Swipe to Flash it.
Now, Head back to TWRP menu Then click on Reboot–> System.
That’s it! You have successfully rooted and installed TWRP Recovery on Samsung Tab S3.