Loudspeaker 1:30. Rear housing 2:37. USB & Microphone 5:15. SIM & SD Tray 6:54. Earpiece & Proximity/Gesture Sensor 7:38. Mainboard Off 10:20. Camera Lens 10:58. Headphone Socket 12:25. Vibrating Motor 14:08. Dial *#0*# to enter diagnostics. DIY repairs will void any warranty but may save you £$ :-). L1 is an external test port for the GSM/3G Radio. R1 is an external test port for the 4G Radio. The blue antenna cable is for 3G/GSM. My studio setup.