How to photo shop on zte warp?

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 

If you can't take any screenshots using the built-in combination method, then I recommend you to install a screenshot application from [Google Play][1]. Just navigate through results and you will see ...