How do i root my zte zte n5?

I tired the built-in feature but the volume and off feature comes up  

I got a ZTE Warp Sequent (ZTE-N861)earlier today. Pressing Volume ...  

Press the down volume button and the power button and hold  

I went to Google Play but all the apps that CLAIM to be NO ROOT continue to atsk me to root my phone ! @peteclapp  

... are applications that don't require a rooted phone. [1]: https://play.google.com ...