As we already know, after the recent update, we all were unable to Root AT&T Samsung Galaxy S4 SGH-I537 and I recently told some of my respected readers, that someone, somehow will come up with an exploit method to root your AT&T Galaxy S4, and that has come true. I am really grateful to the Geohot hacker and developer who come up with a simple and the so far easiest method to Root Your AT&T Galaxy S4 Active.
I will guide you step by step, how to easily root your Galaxy S4 SGH-I537, the guide is simple, you don’t have to unlock bootloader, It just needs your AT&T GS4 device with internet accessibility. Now follow the instructions below to do it now.
Instructions: How to Root AT&T Galaxy S4 Active SGH-I537
Step 1. First of all you need to enable third party application’s installation on your AT&T Galaxy S4, Go to Settings->>More->Security->Enable Unsources and verify apps options.
Step 2. Now browse the Geohot’s website, to download the ar.apk file. Once you get on the site, click on Lambda sign and on the next page, right click& Save Page As.
Step 3. Now copy the ar.apk file on your Galaxy S4 and install it, during this it will give a message that you have root.
Step 4. Now Open Google Play from your device and search for SuperUser App and Install it on your device. You can also use this direct link to download SuperUser App on your device. [Click Here]
Step 5. Now you are almost done, just open the SuperSU app and update binary when prompted.
That’s it! Folks, By Now You have Successfully Rooted your AT&T Galaxy S4 SHG-I537. Hopefully it has worked for you, if you do have any queries and suggestions, feel free to inform us in the comment section. For more updates and Samsung Root Tutorials, stay tuned.[source: XDA]