They still sell the 6.
My friend bought a new one last month because she wanted an iphone and it was the best one she could afford.
It is also now bent after less than a few weeks......
Ugh! They wouldn't replace mine! Yet some they did. It was at their discretion, which felt really shady.
Well, whatever. They don't like me much at my local stores. Dead pixels on 5s, twice. Then bent 6. Then 6s with battery recall. Then SE with logic board issues that was replaced three times from same batch and did the same thing... Gave up and used JUMP on T-Mobile to get another 6s!
Went to Apple store last month, was going to get a 7 Plus replacement but before I wiped mine, I asked to do a test call on the replacement..
It dropped that call. So I kept my original as at least the rest of it works well even if calls and data are positively horrid. Mine was actually less yellow than the one they were offering me anyways, meh!
I had trouble with Android phones too from time to time, like my V30+. I went through two of them to find a uniform screen but I've seen variances on the iPhone X too.
OLED, its got its pros and cons.
My only issue with Apple as of now is their choice of component lottery.