Difficulty

Moderate

Steps

22

Time Required

                          20 minutes

Sections

2

  • Battery
  • 13 steps
  • Motherboard
  • 9 steps

Flags

0

  • BackXiaomi Mi 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

The motherboard is a piece of hardware that allows for components of a phone – such as RAM, CPU, memory, and other components – to communicate with each other. A faulty motherboard will make your phone unable to boot up or cause it to frequently crash. It can be damaged by an overheating battery, dropping the phone, or using incompatible chargers.

Be aware that an improperly installed battery can lead to overheating and swelling of the battery, which can further damage the motherboard and potentially cause a fire.

Before beginning, make sure to power off your phone completely and disconnect from any external power source.

What you need

Step 1

              Battery
  • Firmly press the SIM card removal tool into the hole located at the top of the phone to eject the SIM card tray from the slot.

Firmly press the SIM card removal tool into the hole located at the top of the phone to eject the SIM card tray from the slot.

1024

Step 2

  • Remove the two Phillips head screws located at the top of the phone on either side where the SIM card was ejected.
  • One screw is located under an orange sticker which would serve as your warranty for the camera were this practice not illegal as per the Magnuson–Moss Warranty Act of 1975.

Remove the two Phillips head screws located at the top of the phone on either side where the SIM card was ejected.

One screw is located under an orange sticker which would serve as your warranty for the camera were this practice not illegal as per the Magnuson–Moss Warranty Act of 1975.

Step 3

  • Insert a pry tool into the upper edge of the phone, where there is a small gap between screen and frame of the phone to begin separating the screen from the rest of the phone.
  • Be careful when using the pry tool as it can damage the phone’s screen or other components.

Insert a pry tool into the upper edge of the phone, where there is a small gap between screen and frame of the phone to begin separating the screen from the rest of the phone.

Be careful when using the pry tool as it can damage the phone’s screen or other components.

Step 4

  • Once the pry tool has been inserted into the phone, slide it around the perimeter of the phone while gently lifting until the screen panel and back panel of the phone separate.
  • Be careful when using the pry tool as it can damage the phone’s screen or other components.

Once the pry tool has been inserted into the phone, slide it around the perimeter of the phone while gently lifting until the screen panel and back panel of the phone separate.

Step 5

  • The back of the phone should now be separated from the screen.

The back of the phone should now be separated from the screen.

Step 6

  • Place the front panel screen side down with the camera at the top.
  • Remove these six Phillips head screws located at the upper half of the phone.
  • This screw is located under an orange sticker at the top right corner of the panel. The sticker can be removed with a pair of tweezers, then remove that Phillips head screw.

Place the front panel screen side down with the camera at the top.

Remove these six Phillips head screws located at the upper half of the phone.

This screw is located under an orange sticker at the top right corner of the panel. The sticker can be removed with a pair of tweezers, then remove that Phillips head screw.

Step 7

  • Next, remove these three screws located at the bottom of the back panel.

Next, remove these three screws located at the bottom of the back panel.

Step 8

  • Using tweezers, remove the rubber dust cover on the back panel of the phone.

Using tweezers, remove the rubber dust cover on the back panel of the phone.

Step 9

  • Remove the plastic cover on the bottom of the back panel by inserting the pry tool at the edge and gently lifting.

Remove the plastic cover on the bottom of the back panel by inserting the pry tool at the edge and gently lifting.

Step 10

  • Remove the upper plastic cover from the back panel by inserting the pry tool into the upper edge and gently lifting.
  • Some models have the NFC antenna at the back of the battery glued to the top cover. It is not possible to remove the top cover without removing the battery as well. For these models, check the touchscreen guide for instructions.

Remove the upper plastic cover from the back panel by inserting the pry tool into the upper edge and gently lifting.

Some models have the NFC antenna at the back of the battery glued to the top cover. It is not possible to remove the top cover without removing the battery as well. For these models, check the touchscreen guide for instructions.

Step 11

  • Using a spudger, remove the small ribbon cable that is connected to the battery.

Using a spudger, remove the small ribbon cable that is connected to the battery.

Step 12

  • Remove the battery by gripping and pull up on the “Battery Removal” tab attached to the left side of the battery on the back panel.
  • Some force may be required to remove the battery since it is adhered to the phone with two pieces of double sided tape.

Remove the battery by gripping and pull up on the “Battery Removal” tab attached to the left side of the battery on the back panel.

Some force may be required to remove the battery since it is adhered to the phone with two pieces of double sided tape.

Step 13

  • The battery is now removed from the panel.

The battery is now removed from the panel.

Step 14

              Motherboard
  • Disconnect the antenna wire that is attached to the lower left side of the motherboard using the pry tool.

Disconnect the antenna wire that is attached to the lower left side of the motherboard using the pry tool.

Step 15

  • Use a pry tool to separate the LCD display cable from the motherboard. The cable connects to the motherboard as a rectangular metallic piece at the bottom right of the motherboard.

Use a pry tool to separate the LCD display cable from the motherboard. The cable connects to the motherboard as a rectangular metallic piece at the bottom right of the motherboard.

Step 16

  • Disconnect the gold ribbon cable for the LCD display by gently inserting the pry tool under the wide end and lifting up.

Disconnect the gold ribbon cable for the LCD display by gently inserting the pry tool under the wide end and lifting up.

Step 17

  • Separate a cable ribbon from the top right of the motherboard by gently inserting the pry tool under the rectangular metallic piece and lifting.

Separate a cable ribbon from the top right of the motherboard by gently inserting the pry tool under the rectangular metallic piece and lifting.

Step 18

  • Separate a cable ribbon from the top right of the motherboard - near the cable from the previous step - by gently inserting the pry tool under the rectangular metallic piece and lifting.

Separate a cable ribbon from the top right of the motherboard - near the cable from the previous step - by gently inserting the pry tool under the rectangular metallic piece and lifting.

Step 19

  • Using a pry tool, gently lift the side control buttons assembly away from the case. They should be loosely connected to the motherboard.

Using a pry tool, gently lift the side control buttons assembly away from the case. They should be loosely connected to the motherboard.

Step 20

  • Remove these two screws.

Remove these two screws.

Step 21

  • Remove the motherboard from the panel carefully. Use the pry tool as a lever from the top of the panel and lift if from that side.

Remove the motherboard from the panel carefully. Use the pry tool as a lever from the top of the panel and lift if from that side.

Step 22

  • The motherboard has now been successfully removed.

The motherboard has now been successfully removed.

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

Cancel: I did not complete this guide.

                                                                                      7 other people completed this guide.

Author

                                      with 9 other contributors 


                    Tyler Howard

Member since: 09/02/2015

693 Reputation

                                      4 Guides authored                  



                       Badges:
                       10







                                                        +7 more badges

Team

                       USF Tampa, Team 1-5, Remmell Fall 2015                        

                                                  Member of USF Tampa, Team 1-5, Remmell Fall 2015 



                    USFT-REMMELL-F15S1G5                     


                                            4 Members                     


                                            6 Guides authored

kalpana asati - Dec 2, 2016

Reply

Mi have problems with my mother board i am nt getting it anywhere in the servce center sggst me where i can get it.

scrapped ham - Oct 22, 2017

I know one in the Moscow)

Raju - May 1, 2017

Reply

my motherboard was shot plz replaced my motherboard

I can send to you bricked mainboard. Unsucsessful flashing, but you can rise up it in 9008 mode. If interesting - write to me.

Shams farash - Nov 27, 2017

Reply

My sound is little bit cracking, what to do..plz help me.