Though a update would be neccesary.
We got luckily wuthout knowing a one device more, furthermore i dunno why maybe seller somewhat did a mistake, anywho, both device has same touchscreen sensitive problems so ppl that will play games, never buy it! You wont be able to aim good, i swear.
As of screen quality, its horrible! It arrived with lots of dead pixels in screen, and was frustrating but not noticable.
As of the free x6 that arrived, for some reason i dunno why but it randomly bootloops and sometimes it gets stuck so it doesnt boot and so i must take battery out and slap it. I guess something causes phone battery to trigger device malfunction. The purchased device still works good, no bad sides.
The case was not durable, plastic on both device all over the corners did crack and have a deep crack that is about 1 inch long.
Both device heats alot, mostly if u place finger to the camera around the metal of rear cam, it is super hot there on some light HD games.
As of white cuvot x6 rebooting, it started happen after 1 month use. I did fully new rom installaion and ended up in imei & nvram issue, so i fixed that in an hour, and though i fixed issue but NADA! It is device that is having problems.
My recommendation, go get another china device, OR order for ~300€ htc one m8 (i assume its cheap cuz its blackmarket/stolen product). U can get it from aliexpress, and other chinese device selling websites.