From helping you flash custom ROMs to tuning the kernel or even masking your whereabouts behind a fake GPS signal, if it is not available in the Google Play Store for a non-rooted tablet like the Samsung Galaxy Tab 3 tablet, then it will be out there available for the root user.
Rooting the Android operating system that is running on the Samsung Galaxy Tab 3 8.0 tablet is what makes you the root user. The root user to Android is the administrator to Windows, and both are what is required if you are going to be in full control over what is installed and uninstalled on the device. That includes being able to remove the system apps on Android if you do not like what your OEM or phone carrier network has decided to install on top of stock Android. It also includes anything to do with changing the UI and features to enhance Android in ways that suit you more in comparison to what the Android developers conjured up with the stock version of the operating system.
A conventional reason that people love to root the Samsung Galaxy Tab 3 8.0 tablet is to help make the battery last longer—because who does not want a longer lasting battery? Most of us are never satisfied with what OEMs put in partly because they try to make the device as compact as possible and partly because we are not very good and developing battery technology. One of the applications you can install after rooting the Samsung Galaxy Tab 3 8.0 to help with the battery is the Amplify Battery Extender. The Amplify Battery Extender app offers something a little bit different than the usual Greenify option, and it does a pretty good job at clearing out the RAM which then allows for the battery to last longer. As with most apps that promise a longer lasting battery, they do not do it by magically adding some juice to the battery itself but rather working out what is causing the battery to drain faster that it potentially could do. The developer of the Amplify Battery Extender app makes some money along the way with in-app purchases but they are not required to get things underway and your battery lasting longer.
- You must have a computer that is running the Windows operating system to use this guide. Any other operating system cannot run the Odin flashing tool. Those who are stuck with Mac or Linux and cannot get a Windows computer can try running the Windows operating system from a Windows virtual machine. You can usually set up a virtual machine with a free trial that lasts long enough for you to complete something like rooting the Android operating system.
- You must have the Samsung Galaxy Tab 3 8.0 tablet that has the SM-T310 model number to use this guide. The CF-Auto-Root tool is usually made for one model number each and flashing the file on the wrong model number bricks the device almost always.
BEFORE WE BEGIN
- Note that Chainfire was running the KOT49H.T310XXUBNH3 firmware build number on his Samsung Galaxy Tab 3 8.0 SM-T310 when he created the working rooting method in this guide. You do not have to be running on the same firmware build number as Chainfire was running. All you need is to be running on the Android 4.4.2 KitKat software updates and make sure you have the Samsung Galaxy Tab 3 8.0 that comes with the SM-T310 model number, and the guide works.
- Unlock the Developer Options menu on the Samsung Galaxy Tab 3 8.0 if it is not unlocked already by tapping on the Menu > Settings > About Device > Build Number no less than seven times. You have tapped on the build number enough times when the Android software shows a new message n the display that says you are using the device as a developer.
- Turn on the USB Debugging Mode from the Samsung Galaxy Tab 3 8.0’s Developer Options menu that you just unlocked by tapping on the Menu > Settings > Developer Options and then checking the box that is available for the USB Debugging Mode.
- Install the Samsung USB Drivers on the Windows computer  so the Samsung Galaxy Tab 3 8.0 can be detected by the Odin flashing tool.
- Sometimes a new bootloader can be present in an Android software update. These are a lot more common when updating to newer versions of Android it should not be a problem here. Nonetheless, if a new bootloader does arrive, it can stop CF-Auto-Root from working until Chainfire updates the file. Before he knows when to update the file, he needs readers to leave the new recovery image found in the problematic firmware in a message on the CF-Auto-Root tool thread made over at the XDA-Developers website .
HOW TO ROOT SAMSUNG GALAXY TAB 3 8.0 SM-T310 RUNNING ON ANDROID 4.4.2 KITKAT SOFTWARE UPDATES
- Download the CF-Auto-Root  tool for the Samsung Galaxy Tab 3 8.0 SM-T310 running Android 4.4.2.
- Extract the rooting file to the Downloads folder on the computer—where your downloaded file will appear by default after it has finished downloading.
- Once extracted, the Odin flashing app and the CF-Auto-Root tool will be available in the Downloads folder. Double-click on the Odin flashing app file so the flashing tool opens.
- Boot the Samsung Galaxy Tab 3 8.0 tablet into the download mode  and then connect it to the computer with the USB cable.
- Check to see that Odin is detecting the device by observing a blue or yellow color coming from the ID: COM port. (No color means you still need to get the Samsung USB Drivers working or that you are not logged into the computer as an administrator).
- Click the AP button from the Odin app on the computer.
- Browse through to the Downloads folder and select the Md5 file to upload to Odin.
- Click the Start button from Odin and the rooting begins.
- Wait until you get a green pass box appearing in Odin near the ID: COM port before unplugging from the computer.
In conclusion, that is how to root Samsung Galaxy Tab 3 8.0 SM-T310 running on the Android 4.4.2 KitKat software updates by using Chainfire’s CF-Auto-Root tool–one of the only one-click rooting solutions out there for Samsung devices. The SuperSU app is installed and enabled now, and you can see it in the app drawer when the tablet reboots back into the normal mode.