When the back cover is removed, the following 4 cables must be disconnected:

1. Multitouch cord.

2. Display cable. A lot of heat dispatching tape here. Peel off gently. To be pulled out towards the bottom of the phone.

3. Bottom board connector. Taped with heat dispatching tape, peel off, pop up, like the multitouch cord. You only need to disconnect it from the main board, do not remove the whole cord.

4. Antenna connectors. Lift up, pull up. Lift them out of the way.