This. My 6 Plus is barely usable now, to the point where it is annoying the hell out of me. On iOS 10 i was fine with the 6 Plus and thought i could easily use it another year, but right now it's barely usable. I compared loading a banking app on my 6 and my colleagues 7 (closed it before) and the difference is astounding (2-3 seconds slower). Also everything is just laggy including typing and taking photos.
I have the 6 and benefited from uninstalling 3rd party keyboards and doing a settings reset. Might have also done a fresh install.
For a 3 year old phone, it's frustrating but still miles ahead of the last Android phone I kept for 18 months. It's still frustrating that the iOS update is basically forced on us instead of being an optional upgrade like on desktop. (Of course it's technically optionally, but the constant nag annoyance makes it effectively forced, imo.)
Odd, I have a 6s Plus and I haven't had any issues after upgrading. Sounds like it's hit and miss. I wonder if they changed the hardware during the production lifetime.
6S has the A9 processor, the 6 has the A8, maybe that makes enough of a difference for it to not be that bad. I will also try the complete reset though.
