Samsung Galaxy S III Motherboard Replacement

Featured Guide

Featured Guide

This guide has been found to be exceptionally cool by the iFixit staff.

Replace the Motherboard in your Samsung Galaxy S III.

Use this guide to replace the motherboard.

Edit Step 1 Rear Case  ¶ 

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Edit Step 1 Rear Case  ¶ 

  • The following four steps can be accomplished without a plastic opening tool. However, it's recommended to use a tool to best avoid breaking any clips along the perimeter of the rear case.

  • Insert a plastic opening tool or fingernail into the notch in the gap between the rear case and the rest of the phone, located at the top of the device.

  • Gently twist the opening tool to disconnect the clips securing the top of the rear case.

Edit Step 2  ¶ 

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Edit Step 2  ¶ 

  • Slide the plastic opening tool left along the top edge and repeat the twisting motion to widen the gap between the rear case and the phone.

Edit Step 3  ¶ 

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Edit Step 3  ¶ 

  • Continue to move the plastic opening tool around the perimeter of the top left corner, gently prying up along the rear case.

Edit Step 4  ¶ 

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Edit Step 4  ¶ 

  • Pry along the top right side, and continue prying down the right side of the rear case.

Edit Step 5  ¶ 

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Edit Step 5  ¶ 

  • Lift up and remove the rear case from the phone.

  • You may need to peel the case up to separate it from any clips still holding it to the bottom of the phone.

Edit Step 6 Battery  ¶ 

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Edit Step 6 Battery  ¶ 

  • This step can be accomplished without the need of a plastic opening tool. Just use your finger if you want to.

  • Wedge a plastic opening tool into the small notch above the battery.

  • Pry the battery up out of its recess.

Edit Step 7  ¶ 

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Edit Step 7  ¶ 

  • Remove the battery.

Edit Step 8 SIM Card  ¶ 

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Edit Step 8 SIM Card  ¶ 

  • Using your fingernail, push the SIM card slightly deeper into its slot, until you hear a click.

  • After the click, release the card and it will pop out of its slot.

  • For reassembly, push the SIM card into the slot until it clicks in place.

Edit Step 9  ¶ 

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Edit Step 9  ¶ 

  • Use your thumb to slide enough of the SIM card out of its slot to grab ahold of it.

  • Grasp and remove the SIM card away from the phone.

Edit Step 10 microSD Card  ¶ 

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Edit Step 10 microSD Card  ¶ 

  • Using your fingernail, push the microSD card slightly deeper into its slot, until you hear a click.

  • After the click, release the card and it will pop out of its slot.

  • For reassembly, push the microSD card into the slot until it clicks in place.

Edit Step 11  ¶ 

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Edit Step 11  ¶ 

  • Use your thumb to slide the microSD card out of the slot.

  • Remove the microSD card from the phone.

Edit Step 12 Plastic Midframe  ¶ 

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Edit Step 12 Plastic Midframe  ¶ 

  • Remove the ten 4.0 mm Phillips #0 screws securing the midframe to the front panel assembly.

Edit Step 13  ¶ 

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Edit Step 13  ¶ 

  • Grasp the left side of the plastic midframe with your thumb and forefinger and lift it away from the phone.

  • The midframe lightly snaps in place, and can be removed with very little force.

Edit Step 14 Motherboard Assembly  ¶ 

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Edit Step 14 Motherboard Assembly  ¶ 

  • Use a plastic opening tool to pry the front-facing camera connector from its socket on the motherboard.

  • Do not try to remove the front-facing camera just yet. Its cable is still routed beneath the motherboard assembly to the ambient light sensor.

Edit Step 15  ¶ 

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Edit Step 15  ¶ 

  • Disconnect the digitizer cable by gently prying its connector up from its socket on the motherboard.

Edit Step 16  ¶ 

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Edit Step 16  ¶ 

  • Disconnect the display data cable from the motherboard.

Edit Step 17  ¶ 

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Edit Step 17  ¶ 

  • Pry the Wi-Fi antenna cable connector up from its socket on the motherboard.

  • Gently move the cable out of the way of the motherboard.

Edit Step 18  ¶ 

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Edit Step 18  ¶ 

  • Remove the single 3.0 mm Phillips #0 screw securing the motherboard to the front panel assembly.

Edit Step 19  ¶ 

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Edit Step 19  ¶ 

  • Carefully lift the bottom of the motherboard assembly away from the front panel assembly.

  • Remove the motherboard assembly from the front panel assembly, minding any cables that may snag on it.

Edit Step 20 Rear-Facing Camera  ¶ 

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Edit Step 20 Rear-Facing Camera  ¶ 

  • Flip the motherboard over. We recommend setting it on a grounded work surface.

  • Use a plastic opening tool to pry the rear-facing camera connector from its socket.

Edit Step 21  ¶ 

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Edit Step 21  ¶ 

  • Remove the rear-facing camera off the motherboard.

Edit Step 22 Motherboard  ¶ 

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Edit Step 22 Motherboard  ¶ 

  • The motherboard remains.

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

For more information, check out the Samsung Galaxy S III device page.

Required Tools

Phillips #00 Screwdriver

$5.95 · 50+ In stock

Plastic Opening Tools

$2.95 · 50+ In stock

Recommended Tools

54 Bit Driver Kit

$24.95 · 50+ In stock

Pro Magnetic Project Mat

$19.95 · 50+ In stock

Pro Tech Screwdriver Set

$59.95 · 50+ In stock

Anti-Static Project Tray

$4.95 · 50+ In stock

Comments Comments are onturn off

Between step 13 and 14, there should be a step to detach the cable to the camera lens and speaker assembly and the removal of the assembly.

ewu777, · Reply

Where do i buy the original motherboard and what is the cost

Mustafa Mukhtiar, · Reply

I need Mother board for S3. If anyone have then contact idris.dw@gmail.com

idris dahodwala, · Reply

Can you please suggest where can I get the replacement parts for my S3 Korean version

Dijup Tuladhar, · Reply

Hey looks easy! but where do you get the motherboard from?

Beerzy, · Reply

Sounds easy!!!!

but where do you buy the motherboard?

Beerzy, · Reply

I followed the instructions to a tee. Trying to save my old info/motherboard from my galaxy III that has a smashed screen, so I bought a used one and put my old motherboard in it. Everything went perfectly except the most essential thing - the on/off switch for the phone doesn't match up anymore. There's no way for me to turn on my phone on or off unless I go through steps 1-14 and proceed to use a needle to turn it on. I might as well use both phones as door stops now. If anyone wants a motherboard or 2 feel free to contact me before I chuck 'em over a cliff.

Reid Judson, · Reply

hey i am looking for a motherboard, pls drop a mail at mshah0510@yahoo.com

mihirs9,

Do yo have a extra motherboard, mine will turn my phone on then instantly turn off but it will charger batteries, it will vibrate and light up all the time it has slight water damage too a spot I have taken it apart a dozen times. It's a galaxy s3 how much would you want for it.darrinpease@Gmail. Com

darrinpease, · Reply

Need a s3 GT-I9300 mother board please email me carter.89@live.com.au

Aaron, · Reply

hello! we are missing a step between 13 and 14. the top portion of the cover which is the speaker assembly!

Joshua Warlow, · Reply

I samsung s3 having a problem, I need help fix it. thanks Ayub

ayubmohammed77, · Reply

i replaced my old galaxy s3 motherboard today ... but i had lots of pics in an galery lock application soo can anyone get those pics from a damaged motherboard ??

madi, · Reply

hi ... i replaced my old motherboard of galaxy s3 today ... but i want to ask tat is it posible tat some one can get pics from a galery lock aplication in my old and damaged motherboard ???

madi, · Reply

I have a i9305 with broken glass and a i9300 in perfect shape. is it possible just to replace the motherboard in the i9300 with the i9305 (to get more RAM and LTE support?) or should the antennas and more (?) also be replaced?

anglerdk, · Reply

Forgot about the step to remove the back casing...pretty simple though, just several screws then pop it off.

Courtney, · Reply

There's another piece of the frame that needs to be taken out, but it doens't come out as nicely... unless I did something wrong. It's the part that covers the speaker. I couldn't find a nice way of taking it out.

David, · Reply

I had to use a guitar-pick to pry that section off of the frame. Start at the front-facing camera edge and run the pick underneath the plastic cover. The catches should release.

Takashi Alekseev, · Reply

I used a pointed prying too to get it started, then the flat one. It took some fiddling but finally came off nicely.

Nick B, · Reply

READ ME!

For a guide that takes you step by step on how to remove the SIM and microSD, I'm surprised they didn't mention the top part of this midframe (still attached, in the pictures). This top part of the midframe also needs to be removed before you can take out the motherboard.

You need to disconnect a ribbon not listed in these directions first, then pry that midframe up with the help of a guitar pick. This ribbon is located by the back-camera, next to the digitizer ribbon. This ribbon is connected to the midframe so it is essential you disconnect this before lifting the frame up.

The frame is really snapped in there so don't be afraid to use a little force - for reference, you will use more force to pull this frame off than you did to pull off the back-cover of the phone. Once this piece is off, your phone should look like the picture in step 14.

Jess, · Reply

Step 18 says the front digitizer connector, but later calls it the earpiece/buttons/ambient light sensor ribbon cable.

Is the Digitizer connector part of the display connector, or is it elsewhere?

Kyle Mattfield, · Reply

Be very careful,as it is very easy to break the connector off the motherboard.

vjmickelson, · Reply

Has anyone tried just folding the motherboard back to the left after removing all the screws WITHOUT disconnecting the wi-fi antenna? I'm just a little worried about this one step.

Cullen Johnson, · Reply

I broke the WiFi antenna connector bit off motherboard. How do I fix it?

rileygoldsmith, · Reply

When reassembling your device, there can be a problem with connecting display data cable to the motherboard. I fixed display data cable on the motherboard before mounting motherboard: it gave me some freedom and simplified positioning of data cable on the motherboard

fomondik, · Reply

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