Touch sensitivity and edge detection issues help?

I have an iPhone 6 plus and i am having problems with touch sensitivity. This normally happens at random times but with specific apps. For instance when i start the camera app the button that takes the picture requires a very hard push in landscape mode. Works fine in standard mode. Sometimes Facebook doesn't register my clicks at the top left hand corner of the screen. Many problems like this occur in other apps but i can't remember them all off the top of my head. I tried resetting the phones setting and i've tried a restore from backup. Sometimes it works fine. Any ideas?

 

It's so annoying. I will be trying to take a picture of my cat but when turn my camera to landscape mode the button fails. By the time I hit it with the correct pressure the cat has moved. Argggg

 

So no one knows what's up with this problem?

 

I'm thinking it's a software issue regarding some app. When i do a factory restore I don't have this problem.