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Introduction

Use this guide to replace the USB-C charging port and daughterboard in your Samsung Galaxy S20.

The USB-C port is soldered to the daughterboard, so this repair will require you to replace the entire daughterboard.

Before you begin, refer to the Samsung Self-Repair document for safety information.

Note: Retaining water resistance after the repair will depend on how well you reapply the adhesive, but your device will lose its IP (Ingress Protection) rating.

  1. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Heat the bottom edge: step 1, image 1 of 1
    • Unplug and power off your phone before you begin.

    • Heat an iOpener and apply it to the back cover's bottom edge for two minutes.

    • A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the phone—the display and internal battery are both susceptible to heat damage.

  2. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Separate the bottom edge adhesive: step 2, image 1 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Separate the bottom edge adhesive: step 2, image 2 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Separate the bottom edge adhesive: step 2, image 3 of 3
    • Apply a suction cup to the back of the phone, as close to the center of the bottom edge as possible.

    • If your display is badly cracked, covering it with a layer of clear packing tape may allow the suction cup to adhere. Alternatively, very strong tape may be used instead of the suction cup. If all else fails, you can superglue the suction cup to the broken screen.

    • Pull on the suction cup with strong, steady force to create a gap between the back cover and the frame.

    • Insert the point of an opening pick into the gap.

    • Due to tight tolerances, this may take multiple attempts of reheating with the iOpener and separating with the suction cup before you get it right.

    • If you are having trouble creating a gap, apply more heat to the edge and try again.

    • Do not apply excessive force with the pick, or you risk cracking the back cover glass.

  3. Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 3, image 1 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 3, image 2 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 3, image 3 of 3
    • Slide the pick back and forth along the bottom edge to slice through the adhesive.

    • Do not attempt to cut the adhesive near the corners of the phone where the glass is curved or you risk cracking the glass panel.

    • Leave your opening pick in the seam to prevent the adhesive from resealing.

  4. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Heat the left edge: step 4, image 1 of 1
    • Apply a heated iOpener to the left edge of the back cover for two minutes.

  5. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Separate the left edge adhesive: step 5, image 1 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Separate the left edge adhesive: step 5, image 2 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Separate the left edge adhesive: step 5, image 3 of 3
    • Apply a suction cup to the back of the phone, as close to the center of the left edge as possible.

    • Pull on the suction cup with strong, steady force to create a gap between the back cover and the frame.

    • Insert the point of an opening pick into the gap.

    • As the glass on this edge is curved, you won't be able to insert this pick very far. As long as the very tip of the pick is underneath the glass's edge, you will be able to proceed.

    • Due to tight tolerances, this may take multiple attempts.

    • If you are having trouble creating a gap, apply more heat to the edge and try again.

    • You can try also applying a few drops of high concentration (over 90%) isopropyl alcohol into the seam to help loosen the adhesive.

    • Do not apply excessive force with the pick, or you risk cracking the back cover glass.

  6. Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 6, image 1 of 2 Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 6, image 2 of 2
    • Once the pick is underneath the glass's edge, tilt it downward and insert it further to fully separate the back cover's adhesive.

  7. Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 7, image 1 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 7, image 2 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 7, image 3 of 3
    • Slide the pick all along the left edge of the phone to separate the back cover's adhesive.

    • Take care when sliding across the ridge in the frame surrounding the volume and power buttons—the cutout in the glass may make it more prone to cracking.

    • Leave your pick under the left edge of the glass near the top left corner to prevent the adhesive from resealing.

  8. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Heat the right edge: step 8, image 1 of 1
    • Apply a heated iOpener to the right edge of the back cover for two minutes.

    • A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the phone—the display and internal battery are both susceptible to heat damage.

  9. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Separate the right edge adhesive: step 9, image 1 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Separate the right edge adhesive: step 9, image 2 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Separate the right edge adhesive: step 9, image 3 of 3
    • Apply a suction cup to the back of the phone, as close to the center of the right edge as possible.

    • Pull on the suction cup with strong, steady force to create a gap between the back cover and the frame.

    • Insert the point of an opening pick into the gap.

    • Like with the previous edge, you will need to tilt the opening pick downward to fully insert it underneath the back cover.

  10. Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 10, image 1 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 10, image 2 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 10, image 3 of 3
    • Slide the pick all along the right edge of the phone to separate the back cover's adhesive.

    • Leave your pick under the right edge of the glass near the top of the device to prevent the adhesive from resealing.

    • As you do this, the back cover may release one or both of the other picks and allow them to fall free. If this occurs, set the pick(s) aside as the bottom edge shouldn't reseal from this point onward.

  11. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Heat the top edge: step 11, image 1 of 1
    • Apply a heated iOpener to the top edge of the back cover for two minutes.

  12. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Separate the top edge adhesive: step 12, image 1 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Separate the top edge adhesive: step 12, image 2 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Separate the top edge adhesive: step 12, image 3 of 3
    • The glass near the corners of the back cover is curved and very susceptible to cracking. Be gentle during this step to prevent damaging your back cover.

    • Gradually slide the pick from the right edge of the device around the top right corner.

    • Continue slicing along the top edge all the way to the top left corner to fully separate the back cover adhesive.

    • If the slicing becomes difficult at any point, stop and reapply heat before continuing.

  13. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Remove the back cover: step 13, image 1 of 2 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Remove the back cover: step 13, image 2 of 2
    • Lift the back cover slowly. Use opening picks to slice any remaining adhesive.

    • Remove the back cover.

    • During reassembly:

    • 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.

    • Remove any adhesive chunks with a pair of tweezers or your fingers. Apply heat if you're having trouble separating the adhesive.

    • If you're using Samsung custom-cut adhesives, follow this guide.

    • If you're using double-sided tape, follow this guide.

  14. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Disconnect the wireless charging coil: step 14, image 1 of 2 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Disconnect the wireless charging coil: step 14, image 2 of 2
    • Use a spudger to pry up and disconnect the wireless charging coil's press connector on the motherboard.

    • Use a Phillips #00 screwdriver to remove the five 4 mm-long screws securing the motherboard bracket.

    • Throughout this repair, keep track of each screw and make sure it goes back exactly where it came from.

    • If you're reassembling with the Samsung Self-Repair kit, be sure to replace the screws with new ones labeled #3373.

  15. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Unclip the motherboard bracket: step 16, image 1 of 2 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Unclip the motherboard bracket: step 16, image 2 of 2
    • Use a pair of blunt-nose tweezers to gently pull up and unclip the motherboard bracket from the plastic midframe.

    • Do not completely remove the bracket yet, as its still attached to the wireless charging coil.

  16. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Unfasten the loudspeaker: step 17, image 1 of 2 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Unfasten the loudspeaker: step 17, image 2 of 2
    • Use a Phillips #00 screwdriver to remove the five 4 mm-long screws securing the loudspeaker and lower midframe.

    • If you're reassembling with the Samsung Self-Repair kit, be sure to replace the screws with new ones labeled #3373.

  17. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Disconnect the loudspeaker: step 18, image 1 of 2 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Disconnect the loudspeaker: step 18, image 2 of 2
    • Insert the point of a spudger into the notch in the top left corner of the midframe and pry up to release the clips holding it in place.

  18. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Remove the wireless charging coil: step 19, image 1 of 2 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Remove the wireless charging coil: step 19, image 2 of 2
    • Insert the point of a spudger into the notch in the top left corner of the midframe and pry up to release the clips holding it in place.

    • Remove the wireless charging coil.

  19. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Disconnect the battery: step 20, image 1 of 2 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Disconnect the battery: step 20, image 2 of 2
    • Use a spudger to pry up and disconnect the battery's press connector on the motherboard.

  20. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Disconnect the flex cables: step 21, image 1 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Disconnect the flex cables: step 21, image 2 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Disconnect the flex cables: step 21, image 3 of 3
    • Use a spudger to pry up and disconnect the primary and secondary flex cables from the motherboard.

  21. Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 22, image 1 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 22, image 2 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement: step 22, image 3 of 3
    • Use a spudger to pry up and disconnect the primary and secondary flex cables from the daughterboard near the bottom of the device.

    • To re-attach press connectors like this one, carefully align and press down on one side until it clicks into place, then repeat on the other side. Do not press down on the middle. If the connector is misaligned, the pins can bend, causing permanent damage.

  22. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Remove the flex cables: step 23, image 1 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Remove the flex cables: step 23, image 2 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Remove the flex cables: step 23, image 3 of 3
    • Remove the primary and secondary flex cables.

    • Set the cables aside. You'll reuse them during reassembly.

  23. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Unfasten the daughterboard: step 24, image 1 of 2 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Unfasten the daughterboard: step 24, image 2 of 2
    • Use a Phillips #00 screwdriver to remove the three 3.4 mm-long screws securing the USB-C port and daughterboard.

    • If you're reassembling with the Samsung Self-Repair kit, be sure to replace the screws with new ones labeled #3396.

  24. Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Remove the daughterboard: step 25, image 1 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Remove the daughterboard: step 25, image 2 of 3 Galaxy S20 USB-C Charging Port and Daughterboard Replacement, Remove the daughterboard: step 25, image 3 of 3
    • Insert the pointed end of a spudger under the left edge of the daughterboard and pry up to release it from its recess.

    • Use a pair of tweezers to pull the daughterboard up and away from the bottom of the device and remove it.

Conclusion

To reassemble your device, follow the instructions in reverse order and perform the opposite actions, e.g., "reattach" instead of "removing." Skip steps that use heating and prying, and pay close attention to the 📌 bullets as you work through the steps.

After you've completed the repair, download the Samsung Members App from the Galaxy Store or the Play Store, and follow the Samsung Self-Repair document (beginning page 9) to make sure your device is fully functional.

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.

Alex Diaz-Kokaisl

Member since: 01/16/2022

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