This guide is for removing or replacing the motherboard cover assembly on the LG G3 (D855) model.
Power off your phone.
Remove the back cover by lifting it.
If stuck, use fingernail or prying tool on midframe to release remaining clips.
Locate the notch on the battery housing and insert a fingernail or a prying tool. Gently pry the battery outward from its recess.
Remove the battery from its recess.
Remove four Phillips #00 screws, each 4 mm in length.
Insert a thumbnail or a prying tool like a spudger into the notch at the bottom left of the back cover.
Pry up the plastic panel, including the loudspeaker, until you have a good grip.
Remove the plastic panel and loudspeaker by gently pulling them away from the phone assembly.
Remove the eight Phillips #00 screws with 4 mm length.
Insert an opening pick between the bottom right corner of the motherboard cover and the motherboard.
Lift the motherboard cover from its right edge.
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