Thats called touch disease and it's a design flaw. Lucky us bought the flawed design in the new model design. But apple is happy to replace it for $150 with the same flawed model which will get the same issue in a few months.
https://ifixit.org/blog/8309/iphone-6-plus-gray-flicker-touch-death/
https://www.apple.com/support/iphone6plus-multitouch/
p.s.This is why I am leaning towards skipping release 1 of the iPhone X. Buggy first gen models...
Hi
@WannaGoMac (nice name by the way regarding the iOS 11 mess, High Sierra is fine),
and sorry for my long "story" what drifted too much off the topic and I am also too tired to check it for typos etc. now.
tl;dr:
Same unresponsiveness on SE (and gone after downgrade).
I chose to use just my Mac(s) for now (and maybe an iPad with 10.3.3) because iOS 11.whatever is a completely mess on almost every iPhone and iPad for many reasons and I am not talking about micro stutters, that I never experienced.
Maybe my almost fast enough but too small 4s with even the option to downgrade from 9.3.3 to 6 could be used when I need a phone until I get my perfectly working 6s Plus with 10.3.3 back (what also worked better with 11 as a brand new crazy fast 8 Plus).
Everything explained in my much too long text. Sorry even this is getting long. At first I just wanted to say that it could be touch disease but not on my SE.
So, the SE also has touch disease? I am experiencing exactly the same screen unresponsiveness (but not the other flaws) since iOS 11 on mine. A downgrade to 10.3.3 fixed it then I upgraded again after the updates 11.0.1, 11.0.2, 11.1 beta 2 and can't downgrade anymore because Apple stopped signing.
It even feels like DB1 and/or 2 (maybe 3, can't exactly remember) of 11 was more usable and it is getting worse and worse with every new update.
Gladly my 4s still has 9.3.3 on it and I never got offered an OTA update to a newer version (probably because I did not delete the DB profile in time). It's slower but usable with the correct settings. But I could even downgrade to iOS 6, what is not possible with 9.3.4 or 5.
My 6s Plus did not have really issues since DB1 of 11 (but I am not a "power user"). I sadly had to give (or lend) it to my brother because he cracked the display of his 6 and it wasn't fixed properly or has some kind of touch disease now and he has no money for a new one.
I wanted to keep it for at least 5 years because of greedy €1.049 (128GB).
Luckily he forced me to downgrade it to 10.3.3 before it was too late because of his crashing apps that I never used. I don't know how it would do now for me and hopefully get it back soon and stay on that version. Otherwise have to find a used one.
I had to buy an interim 8 Plus 64GB (at least "just" 909€ now) what I never ever wanted and will send it back.
Too many bugs (not those "crackling sounds") and ugly design flaws in stock apps in every version from 11.0 to 11.1 beta 2. Also the new App Store is horrible buggy. The search really improved.
But often I don't see that an app had already been purchased ("get" instead of "cloud") and if I scroll down in an app description just a little too fast the screen gets blank.
Even more horrible is my 10.5" iPad Pro what I only purchased because it was just 89€ with a new contract I needed anyway and didn't need a new phone.
I will sell very soon, don't now what version of iOS is on my 9.7 Pro, it worked better with 11 but I think I set it up as new after downgrading it to 10.3.3 because it was also an option for my brother.
Anyway I am mostly using my Macs with High Sierra (what seems to work fine) and hate all iOS devices now. I never really liked iPads but finally wanted to try one mostly because of the pencil.
My brother also chose to rather lend my Early-2016 12" MacBook (instead of an iPad) because his white Mid-2010 what I also gave to him for free, even though I loved it, had a software error what I fixed by just an "update" to the same Sierra version from Recovery and uninstalling some bloat apps he did not really need (like Acrobat Reader and Chrome).
And I had to buy an over prized 2017 15.4" (the cheapest version with his student discount and crappy free 300€ Beats ) as a weight and screen size compromise for the 12" and the perfectly working Late-2011 17", both are good but I only want one MacBookWhatever that is not too heavy, has a large enough screen and no keyboard issues I might get. Still hoping for a recall... I missed the return window because I was sick.
Julie