Ok, I have enlarged and read it - the only thing I would be concerned about is the loose area. The clicking noises simply indicate that the screen is recognising input of some description - unless the clicks are being heard when the screen is locked. Both of these areas are main input areas for the phone - meaning that the click you are hearing is the correct response from the phone.

Take it back and tell them that that portion is loose. Tell them you aint happy. YMMV but give it a shot - not enough people in this country complain and quite often, when you do, you get a result.

Good luck.....