My concern with OLED is burn-in, which has happened to ALL of my Android phones, including the ones that had displays that the manufacturer, and the net, and forum users said would not. With the iPhone, this would be a huge "do not buy" red flag for me, as there is no message notification LED, requiring that I leave the display on all the time while plugged in, so I don't miss messages. Combined with the color shift over the course of the year in all OLED displays, from blue to yellow, the forum here would be a cluster for years, of never-ending threads about OLED issues. I have LCD devices over 10 years old that still look as good as when they were new. ALL of my OLED devices look like puke now.
This and a 100 times this!
It's been 8 years since Sony released their first teeny tiny OLED TV and the tech still isn't there to offer a solid solution for a TV that would hold up to more than the average washing machine life-cycle.
My partner just melts when we pass the curved OLED screens at the store, my reaction is lukewarm to say the least.
I get hives at the thought of a TV that doesn't last 5+ years of good use.
I still have a 30" Philips LCD TV that I paid an arm, a leg, and good portion of my liver for back in 2004. Sure, it doesn't even have HDMI and requires a separate box to receive DTV, but it does its part at my other house where I just stay for the weekends.
My one and only trip to OLED-ville was with the Galaxy S2 - yellow tint, terrible color reproduction and battery life.
It's been years since that, but today's OLED screens still have the same issues, albeit to a lesser extent, than those of yore.