Here we show you how to reassemble the iPhone 6. As there are many screws in iPhone 6, we notes the screw quantity in the detail steps.
Tools needed:
Philips screwdriver
Tweezers
Spudger tool
1.Install the vibrating motor in the rear housing.

2.Fasten vibrating motor with 2 screws.

3.Put the loud speaker module into the slot.

4.Fasten louder speaker with 3 screws.

5.Put the rear facing camera into slot and cover it with the metal cover.

6.Cover it with the metal cover.

7.Fasten the cover with 2 screws.

8.Install the motherboard into the rear housing.(
Notice: take care of the antenna and the connector).

9.Connect 4 connectors and an antenna to the motherboard.

10.Insert the SIM card tray.

11.Cover the metal cover on the bottom of logic board.

12.Fasten it with 2 screws.

13.Install 6 screws in the bottom of the phone to secure the USB charge port.

14.Install 3 screws in the bottom of the phone to secure the headphone jack.

15.Install 6 screws to install the Wi-Fi antenna retaining bracket.

16.Install 1 screw in the middle of the logic board.

17.Assemble and connect the home button assembly with flex cable.

18.Assemble the home button assembly with the metal cover.

19.Install 3 screws to secure the metal cover.

20.Install the earphone and assemble the flex cable.

21.Cover a metal cover to the earphone and install 3 screws to fasten the earphone assembly.

22.Connect the screen assembly and the rear housing assembly.

23.Cover a metal cover on the junction of the connector.

24.Fasten the metal cover with 5 screws.

25.Install 6 screws in the LCD metal plate.

26.Assemble the screen assembly and the rear housing assembly.

27.Install 2 screws in the bottom of the phone,then the reassembly is finished.