I think pretty much any Android phone that got rid of headphone jack is not too popular. I believe it was HTC that dropped it. For iPhones, most people still buy them despite the lack of a headphone jack but I'm sure even on camp iOS it cost them some unhappy users who stayed with their current iPhones because of this or even switched to Android in some cases. On Android, flagships are too alike to most users and lack of a headphone jack is a big enough negative differentiator to simply look elsewhere, as there are similar phones that have one.
LG makes the best LCD IPS panels. They are slowly switching production to OLEDs, but it will be a couple years until they get enough yields to offer them in mainstream. I am happy where they're going with their display division. They already make better flagship TVs than Samsung, thanks to what they can get out of their OLED plants already.
If you're considering getting a display, there's a great one to get at the moment. I got one myself.
It's a 27 inch 4K IPS display based on LG's best 4K IPS panel.. that I got for 399$ (in form of an earlier model that had a non-adjustable stand). It's nicely designed at that too. Here's the link for the US, currently for 429$ on sale for the newer model with better stand:
http://www.bestbuy.com/site/lg-27ud...c-monitor-black-white/5770300.p?skuId=5770300
The interesting part is that despite the price, it's literally one of the best displays on the market. It's a rare case of insane value for money. Very highly recommended.
5K displays are simply less practical due to 4K being standard for next gen content that is cropping out now, and 4K content looking much better on 4K displays due to pixel mapping. After that it will likely be 8K, still many years from now to be standardised and impractical outside of really huge screens (40+ inch) right in front of your face. 4K is already four times as pixel dense as 1080p, and about three times as dense as 2K (which is a misleading name):
4K YouTube also requires >50mbit/s internet connection just for the compressed video to stream in real time, ~200GB of data per movie at mainstream compression levels. A no-no in Canada where there are still data caps, and hilariously tiny ones at that.
As far as phones go, I am happy more and more manufacturers are using OLED. Samsung and LG are at it, with Samsung dominating global production (and quality). I hope LG will follow suit and switch to their own OLEDs in the G series phones soon. Apple is pumping money in their OLED production now, as Samsung is reserving their newest generation Super AMOLEDs to their own mobile division, selling only previous gen to others as a rule.
http://www.gsmarena.com/apple_to_pu...oled_panels_for_future_iphones-news-26462.php