I found this repair guide pretty interesting as I realised the front LCD screen comes out first so if my phone ever gets damage then only the LCD screen needs replacing which is much more easier than it was with the iphone 4S
Apple 5 Disassemly and Repair Guide for Replacement Spare Parts including LCD Digitizer Screen
Apple 5 Disassemly and Repair Guide for Replacement Spare Parts including LCD Digitizer Screen