Android 4.4.x version various root ways most useful root way is Towel root. This tr.ap software can make root any of android 4.4.x kitkat version, While various root tools are failed to root Samsung Galaxy S III AT&T SGH-I747, Samsung Galaxy S5 SM-G900A.
To install and root by Towelroot:
- Download: tr.apk http://depositfiles.com/files/6x5b5ww43
- Install tr.apk one desire device which you wanna root.
- Open towelroot from you device menu.
- Click on Make it ra1n like given below, after wait a few sec to confirm gain root access.