소개
Use this guide to remove or replace the motherboard in your Samsung Galaxy S21.
For your safety, discharge the battery below 25% before disassembling your phone. This reduces the risk of a dangerous thermal event if the battery is accidentally damaged during the repair. If your battery is swollen, take appropriate precautions.
This procedure was done with a Verizon model and has 5G mmWave antenna steps. If you have a non-Verizon model, skip steps with 5G mmWave procedures. The remaining steps are the same.
필요한 것
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Heat an iOpener and apply it to the back cover's bottom edge for two minutes.
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Apply a suction cup to the back of the phone, as close to the center of the bottom edge as possible.
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Pull up on the suction cup with strong, steady force to create a gap between the back cover and the frame.
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Insert an opening pick into the gap.
The backing is a polycarbonate material - so yes it's plastic. Also, when pulling up with the suction cup your correct in that it is or should be done on an angle. Plus, the back is plastic so it will only flex upwards as you're applying the pressure. Lastly, because the backing is still tapped inside and your pulling upwards, if necessary with the hand that's pulling up you can gently rest the part of your palm/wrist against the phone which may also help in the separation process but remember you're goal is to only lift it enough so you can slide in the separator pick. I use guitar picks myself since I have them laying around all over the place. Good luck, and don't rush yourself :0)
Miles Long - 답글
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Slide the pick back and forth along the bottom edge to slice through the adhesive.
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Leave the pick in to prevent the adhesive from resealing.
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Apply a heated iOpener to the back cover's left edge for two minutes.
If you have access to a heating pad you can use this instead and save some cash but make sure to turn it on and let it heat up so you check the temperature first as it needs to be hot enough to melt the glue but not damage the components. Typically, these work great because they're designed not to burn a person.
Miles Long - 답글
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Apply a suction cup to the back of the phone, as close to the center of the left edge as possible.
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Pull up on the suction cup with strong, steady force to create a gap between the back cover and the frame.
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Insert an opening pick into the gap.
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Apply a suction cup to the back of the phone, as close to the center of the right edge as possible.
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Pull up on the suction cup with strong, steady force to create a gap between the back cover and the frame.
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Insert an opening pick into the gap.
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Rotate the right-edge opening pick around the top-right corner of the phone.
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Slide the top-most opening pick as close to the camera shell as possible.
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Repeat for the left-edge pick.
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Rotate the back cover counterclockwise to create a gap between the camera shell and the frame.
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Insert an opening pick in the gap.
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Gently slide the two picks toward the camera shell so they are under the corners of the back cover adjacent to the camera shell.
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Move the picks back and forth along the bridge between the back cover and the camera shell until you create a gap between the camera shell and the frame.
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이 단계에 사용된 도구:Tweezers$4.99
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Remove the back cover.
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This is a good point to power on your phone and test all functions before sealing it up. Be sure to power your phone back down completely before you continue working.
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Remove any adhesive chunks with a pair of tweezers or your fingers. Use some high concentration (over 90%) isopropyl alcohol to wipe away any adhesive residue.
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If you're using Samsung custom-cut adhesives, follow this guide.
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If you're using double-sided tape, follow this guide.
Why begin reassemble directions or reminders when the battery has not even been removed yet? This advice would be better suited just after the battery install and just after powering on to test. Might have to inject multiple "test" points before and after reassembly.
Tarzan1812 - 답글
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이 단계에 사용된 도구:Magnetic Project Mat$19.95
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Use a Phillips screwdriver to remove the five 4 mm-long screws securing the motherboard bracket to the frame.
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이 단계에 사용된 도구:Tweezers$4.99
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Use a pair of tweezers to gently pull up and unclip the motherboard bracket from the frame.
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While using tweezers, or your fingers, to hold the motherboard bracket out of the way, use a spudger to pry up the battery press connector.
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While still holding the motherboard bracket out of the way, use a spudger to pry up and disconnect the wireless charging coil's press connector.
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Use your fingers to gently peel the wireless charging coil away from the phone.
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Use the point of a spudger to pry up and disconnect the earpiece speaker cable's press connector.
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Use a Phillips screwdriver to remove the seven 4 mm screws securing the earpiece speaker to the motherboard.
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이 단계에 사용된 도구:Tweezers$4.99
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Insert the point of a spudger into the gap between the right-most edge of the earpiece speaker and the phone.
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Use the spudger to pry up and release the clips holding the earpiece speaker in place.
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Use tweezers, or your fingers, to remove the earpiece speaker.
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Use the flat end of a spudger to pry up and disconnect the front camera's press connector.
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Use a spudger to pry up and disconnect the orange press connector adjacent to the 5G antenna cable's press connector.
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Repeat for the green 5G antenna cable's press connector.
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Use a spudger to pry up and disconnect the 5G antenna cable's press connector.
My phone doesn't have one? I double checked the model before I took it apart and that's correct and everything else is correct in the guide so far, but here I have the two orange connectors with no black 5G antenna cable.
Hi Meg.
Great catch! Some S21 models don't have these antennas; they are limited to Verizon carriers. I will update the introductions to explain this.
Thanks Alex! I had some water damage in my phone that was causing the cameras to fog up so I was able to remove them, dry out the cameras, put them back in and everything works great. Really loving these little ifixit tools.
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Use the point of a spudger to pry up and disconnect the power button cable's press connector.
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Use the flat end of a spudger to pry up and disconnect the display cable's press connector.
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Use a spudger to pry up and disconnect the secondary interconnect cable's press connector.
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Repeat for the main interconnect cable's press connector.
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Use a spudger, or your fingers, to bend the power button cable away from the phone.
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Repeat for the left-edge 5G antenna cable.
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이 단계에 사용된 도구:Tweezers$4.99
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Use tweezers, or your fingers, to bend the orange 5G antenna cable away from the phone.
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Repeat for the green 5G antenna cable.
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Use a Phillips screwdriver to remove the 4 mm screw securing the camera bracket and the motherboard to the frame.
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Insert a spudger between the bottom-right edge of the motherboard assembly and the frame.
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Pry up with the spudger to release the clips securing the motherboard assembly.
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Use your fingers to remove the motherboard assembly.
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이 단계에 사용된 도구:Tweezers$4.99
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Use the point of spudger to pry up and disconnect the ultra wide camera's press connector from the motherboard.
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Use tweezers, or your fingers, to remove the ultra wide camera.
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Use the flat end of a spudger to pry up and disconnect the wide and telephoto camera's press connector from the motherboard.
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Use tweezers, or your fingers, to remove the wide and telephoto camera.
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Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.
To reassemble your device, follow the above steps in reverse order.
After you've completed the repair, follow this guide to test your repair.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Check out our Answers community for troubleshooting help.
Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.
To reassemble your device, follow the above steps in reverse order.
After you've completed the repair, follow this guide to test your repair.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Check out our Answers community for troubleshooting help.
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댓글 3개
Is the s21 motherboard the same as for the s21 fe? Don't see it in your site
No, they are different
How hot does the back cover have to be to come off? I tried with iOpener many times but have had no luck opening it. The surface temperature goes up to 105-110F (43C).
Imtiaz Chowdhury - 답글
Hi Imtiaz!
We don't have a specific temperature that we recommend, but, if you're still having issues separating the adhesive with the iOpener, I would recommend you switch to a hair dryer or a heat pad. The back cover should be slightly too warm to the touch.
Alex Diaz-Kokaisl -