the problem with the chinese crap, not just phones but TVs, pads, whatever, is they literally dump a bunch of decent hardware in there, and just stop. no QA, no support, nothing you can find online - so in a few months when any little thing breaks, or there's no way to fix an annoying feature, it goes in the trash.
lots of stories, but here's a couple. got a chinese phone so I never have to put a chinese sim into my real phone. pretty popular in china, good specs. root it and put a non-chinese OS? nothing, and I've searched in chinese.
About 4 years ago got a xiaoimi tablet. quad core, 2GB ram, mini-hdmi output, $70 on amazon. first month perfect. then - wifi started turning off after about 5min, only fixed by a reboot. no support, no documentation, nothing on forums - and it was sold for about 3 months and then they started selling some identical crap with a different model#. seriously, I have no problem paying $1-2k for a phone or pad. What I don't want is useless crap that wastes days of time and gets me pissed off so I can't fall asleep, a year later on a Tuesday.
The thing is, the Chinese culture is used to half-working crap, and they think it's normal. They pump shit out of the sewers, boil it, then use the oil floating on top to dilute cooking oil. At most restaurants. Phone has awkward interface, security holes, and 1 security update after release? who cares - your thoughts are on rent in a dirty apartment and food. If you order your steak medium - it's well done, because yes, they don't toss the beef when it goes bad - they serve it to you, everywhere.
Buildings use a bunch more cement and reinforcement than normal countries. Why? Because the construction workers eyeball all measurements and just don't care - if you don't account for error, it'll collapse.
Not knocking on the Chinese race (my wife is Chinese), but I am knocking their culture. Zero attention to detail, zero cares, zero pride in what you do. It works there, because life is shitty and you don't care about a UI bug when you're broke, there's no law, and an oppressive police force that puts you in jail to harvest your organs for the rich.