Difficulty

Moderate

Steps

15

Time Required

                          15 - 30 minutes

Sections

4

  • Back Cover
  • 1 step
  • Screen
  • 7 steps
  • Headphone Jack
  • 4 steps
  • Motherboard
  • 3 steps

Flags

1

Missed a Step

Oops! This guide is currently missing some important steps.

  • BackMicrosoft Lumia 640 LTE

  • Full Screen

  • Options

  • History

  • Save to Favorites

  • Download PDF

  • Edit

  • Translate

  • Get Shareable Link

  • Embed This Guide

  • Notify Me of Changes

  • Stop Notifications

Introduction

What you need

Step 1

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

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

1024

Step 2

              Screen
  • Use the tweezers to pull back the sticker, revealing the screw underneath.
  • Be careful when removing the screws as they can strip easily.

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

Be careful when removing the screws as they can strip easily.

Step 3

  • Use a T4 Torx driver to remove the screws in the four corners, along with the two in the middle left side (six total).

Use a T4 Torx driver to remove the screws in the four corners, along with the two in the middle left side (six total).

Step 4

  • Using the T4 Torx driver, unscrew the two screws.
  • Keep these screws separate from the screws from back of the phone to ensure that the right screws go where they belong.

Using the T4 Torx driver, unscrew the two screws.

Keep these screws separate from the screws from back of the phone to ensure that the right screws go where they belong.

Step 5

  • Use a plastic opening tool to separate the screen from the back plastic casing
  • Use tweezers to release the clip on the side of device, and remove the back of the phone.

Use a plastic opening tool to separate the screen from the back plastic casing

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

Step 6

  • Using the tweezers or a spudger, pull the gold tab up gently.
  • Using tweezers or a spudger, lift the white connector up gently to completely detach the screen from the phone.
  • For motherboard replacement, skip to Step 11 after finishing this step.

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

Using tweezers or a spudger, lift the white connector up gently to completely detach the screen from the phone.

For motherboard replacement, skip to Step 11 after finishing this step.

Step 7

  • Using a plastic opening tool to carefully get under the gold strip.
  • Use tweezers to pull up the camera.
  • Use tweezers to pull up on the depth sensor.
  • This is held in by a strong adhesive.

Using a plastic opening tool to carefully get under the gold strip.

Use tweezers to pull up the camera.

Use tweezers to pull up on the depth sensor.

This is held in by a strong adhesive.

Step 8

  • Use a plastic opening tool to pry up the ear speaker.
  • This is held in by strong adhesive.

Use a plastic opening tool to pry up the ear speaker.

This is held in by strong adhesive.

Step 9

              Headphone Jack
  • Unscrew the 2 remaining screws with the T-4 bit.

Unscrew the 2 remaining screws with the T-4 bit.

Step 10

  • Use the tweezers to remove the speaker.

Use the tweezers to remove the speaker.

Step 11

  • Use the plastic opening tool to lift up the black tab.
  • Use the tweezers to gently pull up on the gold tab.
  • Using the spudger, slowly get underneath the gold sticker and pry it up. This sticker is held down with a strong adhesive.

Use the plastic opening tool to lift up the black tab.

Use the tweezers to gently pull up on the gold tab.

Using the spudger, slowly get underneath the gold sticker and pry it up. This sticker is held down with a strong adhesive.

Step 12

  • Use the tweezers to remove the orange insulator foam.

Use the tweezers to remove the orange insulator foam.

Step 13

              Motherboard
  • Using the pry tool lift up on the black tab

Using the pry tool lift up on the black tab

Step 14

  • Using the spudger, press out the motherboard.

Using the spudger, press out the motherboard.

Step 15

  • Gently wiggle out the motherboard.

Gently wiggle out the motherboard.

To reassemble your device, follow these instructions in reverse order.

Cancel: I did not complete this guide.

                                                                                      2 other people completed this guide.

Author

                                      with 2 other contributors 


                    Nick Emmert

Member since: 09/27/2018

637 Reputation

                                      5 Guides authored                  



                       Badges:
                       10







                                                        +7 more badges

Team

                       Linn Benton Community College, Team S1-G2, Johnson Fall 2018                        

                                                  Member of Linn Benton Community College, Team S1-G2, Johnson Fall 2018 



                    LBCC-JOHNSON-F18S1G2                     


                                            5 Members                     


                                            10 Guides authored