Microsoft Lumia 640 LTE Motherboard Replacement

Use your thumb or fingernail on the edge/corner of the phone to pry the back cover off the phone.

Use the tweezers to pull back the sticker, revealing the screw underneath.

Use the T-4 bit to unscrew the screws in the 4 corners, along with the two acres in the middle left side.

Using the T-4 bit, unscrew the two (2) screws.

Using the plastic opening tool to separate the screen from the back plastic casing

Use the tweezers to release the clip on the side of device, and remove the back of the phone.

Using the tweezers or a spudger, pull the gold tab up gently

Using the tweezers or spudger, pull the white circuit up gently to completely detach the screen from the phone

For Motherboard replacement skip to step 11 after finishing this step

Using the plastic opening tool, carefully get under the gold strip

Using tweezers pull up the camera. The camera just sits in there

using the tweezers pull up on the depth sensor. This is held in by a strong adhesive

Using the plastic opening tool, pry up the ear speaker. This is held in by strong adhesive.

Unscrew 2 remaining screws with T-4 bit.

Remove speaker using tweezers.

Use the plastic opening tool to lift up black tab

Using the tweezers, gently pull up on the gold tab

using the spudger, slowly get underneath the gold sticker to pry it up. Held down with strong adhesive

Remove orange insulator foam with tweezers.

Using the pry tool lift up on the black tab

Using the spudger, press out the motherboard.

Gently wiggle out the motherboard.