Towelroot

Towelroot is powerful one-click rooting utility that makes rooting simple. No technical knowledge is required, just install and root!

Towelroot has been fully tested and works with the following devices:

∙ AT&T Samsung Galaxy S5
∙ Verizon Samsung Galaxy S5
∙ Samsung Galaxy S4 Active
∙ Google Nexus 5

Also works with almost every Android phone with a kernel build date before Jun 3 2014.

Towelroot does not currently support HTC & Motorola phones, or any phone without a writable system.

Does it trip KNOX?
Most probably not. My phone says "KNOX WARRANTY VOID: 0x0", but no promises.

Will this brick my phone?
Towelroot hasn't bricked a phone yet.

Official site: https://towelroot.com/