I can relate to this but im honestly glad i am not experiencing it with my new 7+, but i experienced it with my 6. It was always the top left corner where the volume buttons were, i could even see the distance between the bezel and the screen and when i pressed it the screen would move down slightly and it always had this clicking noise. sometimes when i hold it a certain way, different parts of the screen would click. I mean, i shouldnt have to be careful of how i hold it...i just wanna pick it up or use it normally without worrying about hearing that stupid sound and feeling like my iphone is all loosey goosey 