First some background:
I've only had Motorola smartphones. I never had a single problem, so I didn't hesitate to buy another one when I wanted to upgrade.
My most recent was a Moto X 2nd Generation which--after four years of perfect service--started having battery problems. After buying a replacement battery and tools...yeah...these old eyes weren't about to attempt the repair on my own.
So I bought a new Moto Z² Force Edition instead!
Now that's where it starts getting weird. The very first time I used its default camera app to take a picture, it crashed. Like 'restarted the phone by itself' crashed. Odd, I thought.
Then I installed my normal camera app,
A Better Camera Unlocked, took some pics with it, no problem, so I chalked it up to a fluke.
But then other stuff happened, including screen burn-in (which I didn't even think was still a thing!), despite never leaving the screen on and idle for long periods.
So in May, I got off my lazy ass long enough to call Motorola and ask for a replacement (it was under warranty), which arrived a couple days later. And guess what? No weird problems!
It's been a month+ and everything's as I expect with a Motorola phone. I think I simply got a lemon with the first one.
And, if anything, this whole experience actually made my loyalty to Motorola even stronger. There was a problem, they resolved it quickly and painlessly, and I'm happy with my phone. Can't ask for more than that!
PS I still use the Moto X--I just keep it plugged in all the time. No problems, and it's over 4 years old.
ETA PPS: I totally forgot to say that the replacement phone's battery lasts HOURS longer than the lemon's! Like 8+ hours longer, under the same usage conditions. Nice!