The phone has a remarkable feel on hands. A glass body takes x4 out of the league of metallic smartphones. It feels premium with 5.2 size.
Now upgradeable to android 8 oreo and with snapdragon 630 processor the performance is great. no lags, no heating, smooth switching between apps and smooth multitasking.
The battery backup is good and with turbo charging it charges real quick in a short amount of time.
X4 has dual rear camera and 16mp front camera with front flash. You can take low light photos and has many options for snaps.
64gb internal memory with 6gb ram it can run games with ease.