After voting for to say my phone was flawless I found pressing my phones bottom left hand corner makes it squeak (only way I can describe it). I thought it was the excess room in the case. But not the actual phones screen presses in ever so slightly. Because I have not seen this yet I'd thought I'd let you know incase your is secretly like this. Mine iPhones details, week number are below.
Cheers.
Cheers.