Difficulty

Easy

Steps

8

Time Required

                          5 - 15 minutes

Sections

1

  • Motherboard
  • 8 steps

Flags

Step Trimmer

This guide has unnecessary steps. Trim them to be more concise!

  • BackLG Cosmos 3

  • 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

              Motherboard
  • Before completing this step, make sure your device is turned off. Once it is turned off, remove the back cover gently from the phone by prying under the clip near the camera.

Before completing this step, make sure your device is turned off. Once it is turned off, remove the back cover gently from the phone by prying under the clip near the camera.

1024

Step 2

  • Unscrew the six 2 mm screws from under the back panel.

Unscrew the six 2 mm screws from under the back panel.

Step 3

  • Remove the rear casing by prying along the edge of the keyboard bezel, then along the outside edge near the camera button.
  • Slide out the built in keyboard for part of this step.

Remove the rear casing by prying along the edge of the keyboard bezel, then along the outside edge near the camera button.

Slide out the built in keyboard for part of this step.

Step 4

  • Take out the two 3mm screws on the metal plate covering the ribbon cable.
  • Remove ribbon cable cover.

Take out the two 3mm screws on the metal plate covering the ribbon cable.

Remove ribbon cable cover.

Step 5

  • Disconnect ribbon cable.

Disconnect ribbon cable.

Step 6

  • Disconnect volume buttons and camera button from the mounts.

Disconnect volume buttons and camera button from the mounts.

Step 7

  • Remove the motherboard from the rest of phone by prying under the board to the side of the headphone jack.

Remove the motherboard from the rest of phone by prying under the board to the side of the headphone jack.

Step 8

  • Replace the old motherboard with the new motherboard by reversing previous step, and pressing with plastic tool near ends of board to snap it into place.

Replace the old motherboard with the new motherboard by reversing previous step, and pressing with plastic tool near ends of board to snap it into place.

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

Cancel: I did not complete this guide.

                                                                                      6 other people completed this guide.

Author

                                      with 4 other contributors 


                    Will Haslett

Member since: 05/24/2016

191 Reputation

                                      1 Guide authored                  



                       Badges:
                       8







                                                        +5 more badges

Team

                       Central Coast New Tech High, Team 6-6, Rushing Spring 2016                        

                                                  Member of Central Coast New Tech High, Team 6-6, Rushing Spring 2016 



                    CCNTH-RUSHING-S16S6G6                     


                                            2 Members                     


                                            2 Guides authored

Randall Daley - Mar 20, 2018

Reply

two keys on the slide out keyboard of my phone are not dead but hard to activate. hope this helps me get into the keypad and fix the problem. Thanks for the info. Randall in Nashville

Jen Morris - Jan 29, 2019

Reply

This was easy to do: we had a Cosmos2 with a broken screen, but the motherboard fit into a Cosmos3 case and worked fine. Unfortunately, though, it won’t connect to the Verizon network anymore, even though the phone number appears in Phone Info (it was working in 2018). I’m thinking this is due to Verizon’s dropping 1G and 2G network support. Any thoughts are welcome!