As I write this I am on my replacement iPhone and technically on my third screen (my original phone had a screen replacement) but my new one has just started to show signs of the same issue as my original.
What happens to me is that in the bottom right hand corner of the screen if you press down lightly the screen makes a 'click' sound and rests back into the chassis of the iPhone.
It seemed strange to me that if I was getting this issue there must be others, so I did some searching and found several threads on the Apple Support Community where users are having the same (sometimes reoccurring) issue.
Paying over £700 for this 128GB iPhone 6 I feel that I am within my rights to want a 100% working phone but am I being too pick?, I've expected perfection from Apple over the years and am now sensitive to anything that isn't as it should be. I am within my warranty period and am glad that I've put down for Apple Care + to cover me for another year so I feel comfortable that I'm good in terms of being able to get a replacement but I am still wondering what's going on here.
I don't believe that this is a mainstream issue and this post isn't mean to be an 'Apple is doomed' piece but I would like to get comment on what your experiences have been so that I can decide if I am simply unlucky or it's something I need to look into further.