Good smartphone have gotten really cheap and cheap smartphone have gotten really good . ZTE Axon 7 is really a good example of that I think it is the best budget smartphone right now .
There are five pillars of judging a smartphone where it is of $800 or $300 and those pillars are great build quality, great display,great performance , great battery life and great camera if you have all three in you phone the you phone is perfect .
Build Qulaity : Axon 7 is built great it has full metal jacket and pretty much no straight line anywhere it is similar to an Iphone with antenna line on top and bottom and round on edges.It has a sim slot with micro sd slot on the left and it has a USb-type c on the bottom with quick charge 3.0 .It also has a great screen bezel ratio with front facing stereo speaker .
Display : It a quad HD Amoled display and 2560 x 1400 pixel ratio it is decently visible outdoors the video experience with this phone is pretty amazing with front facing stereo speakers.
Performance :ZTE has packed Axon 7 with snapdragon 820 with Adreno 530 and 4GB ram the software which ZTE is using is overall is pretty smooth its not light weight though it is packing a lot of extra features is called Me Favor UI .you can set extra functions like voice unlock, gestures to take the screenshots , turning up the flash light or turning schedule power on and off its is pretty dope.
It has power saving mode , Battery saving mode when you are running out of battery .
Battery : ZTE probably doesn't have the best battery but it has qualcom chipset so it supports quick charge 3.0 it have pretty good battery life with quad HD screen .