Clicky screen bottom right corner

I hava a new 64gb iphone 6 slide grey. The phone has a factory problem:

The screen in the bottom right corner seems to go in and out when you do a little pressure and it produces a sound like "click". I searched for this problem on internet and it seems to be a common problem. I read about a guy who had the same problem and went to an apple store but apple said that the phone wont be changed because the functionality of the phone is entire! This is ridicolous i bought 800€ of phone and at least i want it to be entire!

So i want to ask is apple going to change my phone??