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Samsung Galaxy S21 5G Antenna Replacement

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  1. Samsung Galaxy S21 5G Antenna Replacement, Heat the bottom edge: adım 1, 1 resimden 1.
    • Completely 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, internal battery, and plastic back cover are both susceptible to heat damage.

  2. Samsung Galaxy S21 5G Antenna Replacement, Separate the bottom adhesive: adım 2, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Separate the bottom adhesive: adım 2, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement, Separate the bottom adhesive: adım 2, 3 resimden 3.
    • Apply a suction cup to the back of the phone, as close to the center of the bottom edge as possible.

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

    • Depending on the age of your phone, this may be difficult. If you're having trouble, apply more heat to the edge and try again.

    • Insert an opening pick into the gap.

    • Only insert the pick up to 5 mm, as you may damage internal components if you go further.

  3. Samsung Galaxy S21 5G Antenna Replacement, Slice the bottom adhesive: adım 3, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Slice the bottom adhesive: adım 3, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement, Slice the bottom adhesive: adım 3, 3 resimden 3.
    • Slide the pick back and forth along the bottom edge to slice through the adhesive.

    • Leave the pick in to prevent the adhesive from resealing.

  4. Samsung Galaxy S21 5G Antenna Replacement, Heat the left edge: adım 4, 1 resimden 1.
    • Apply a heated iOpener to the back cover's left edge for two minutes.

  5. Samsung Galaxy S21 5G Antenna Replacement, Separate the left adhesive: adım 5, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Separate the left adhesive: adım 5, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement, Separate the left adhesive: adım 5, 3 resimden 3.
    • Apply a suction cup to the back of the phone, as close to the center of the left edge as possible.

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

    • Insert an opening pick into the gap.

    • Only insert the pick up to 5 mm, as you may damage internal components if you go further.

  6. Samsung Galaxy S21 5G Antenna Replacement: adım 6, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement: adım 6, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement: adım 6, 3 resimden 3.
    • Slide an opening pick along the left edge towards the bottom left corner to cut the adhesive.

    • Don't cut past where the camera shell meets the back cover, as you risk cracking the plastic.

    • Leave the pick in to prevent the adhesive from resealing.

  7. Samsung Galaxy S21 5G Antenna Replacement, Heat the right edge: adım 7, 1 resimden 1.
    • Apply a heated iOpener to the back cover's right edge for two minutes.

  8. Samsung Galaxy S21 5G Antenna Replacement, Separate the right adhesive: adım 8, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Separate the right adhesive: adım 8, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement, Separate the right adhesive: adım 8, 3 resimden 3.
    • Apply a suction cup to the back of the phone, as close to the center of the right edge as possible.

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

    • Insert an opening pick into the gap.

    • Only insert the pick up to 3 mm, as you may damage the secondary interconnect cable, which runs parallel to the right edge.

  9. Samsung Galaxy S21 5G Antenna Replacement: adım 9, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement: adım 9, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement: adım 9, 3 resimden 3.
    • Slide an opening pick back and forth along the back cover's right edge to cut the adhesive.

    • Leave the pick in to prevent the adhesive from resealing.

  10. Samsung Galaxy S21 5G Antenna Replacement, Separate the corner adhesive: adım 10, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Separate the corner adhesive: adım 10, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement, Separate the corner adhesive: adım 10, 3 resimden 3.
    • Rotate the right-edge opening pick around the top-right corner of the phone.

    • Only insert the pick up to 5 mm, as you may damage internal components if you go further.

    • This procedure can be applied to each corner, except the top-left where the rear-facing camera is located.

  11. Samsung Galaxy S21 5G Antenna Replacement, Reposition the opening picks: adım 11, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Reposition the opening picks: adım 11, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement, Reposition the opening picks: adım 11, 3 resimden 3.
    • Slide the top-most opening pick as close to the camera shell as possible.

    • Repeat for the left-edge pick.

  12. Samsung Galaxy S21 5G Antenna Replacement, Heat the camera shell: adım 12, 1 resimden 1.
    • Heat an iOpener and apply it to the camera shell for two minutes.

  13. Samsung Galaxy S21 5G Antenna Replacement, Separate the camera shell adhesive: adım 13, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Separate the camera shell adhesive: adım 13, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement, Separate the camera shell adhesive: adım 13, 3 resimden 3.
    • Rotate the back cover counterclockwise to create a gap between the camera shell and the frame.

    • Only insert the pick up to 5 mm to avoid scratching the camera.

    • Insert an opening pick in the gap.

    • If this method doesn't work, move to the next step for an alternative method; otherwise, skip the next step.

  14. Samsung Galaxy S21 5G Antenna Replacement, Separate the camera shell adhesive (alternate method): adım 14, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Separate the camera shell adhesive (alternate method): adım 14, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement, Separate the camera shell adhesive (alternate method): adım 14, 3 resimden 3.
    • Gently slide the two picks toward the camera shell so they are under the corners of the back cover adjacent to the camera shell.

    • 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.

    • Be careful with this method, as you risk cracking the plastic back cover.

  15. Samsung Galaxy S21 5G Antenna Replacement: adım 15, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement: adım 15, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement: adım 15, 3 resimden 3.
    • Slide an opening pick between the camera shell and the frame to cut the adhesive.

    • There's a significant amount of adhesive securing the frame to the camera shell, so multiple rounds of heating may be needed.

  16. Samsung Galaxy S21 5G Antenna Replacement: adım 16, 2 resimden 1. Samsung Galaxy S21 5G Antenna Replacement: adım 16, 2 resimden 2.
    • There's additional adhesive to the right of the camera that you need to cut through.

    • There's a plate on the back cover surrounding the phone's flash that the pick can get stuck on:

    • Angle the pick downward to avoid any damage.

  17. Samsung Galaxy S21 5G Antenna Replacement: adım 17, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement: adım 17, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement: adım 17, 3 resimden 3.
    • Line up the opening pick's tip with your phone's flash

    • Insert the pick slowly, making sure to avoid the flash's plate.

    • The plate's resistance can feel similar to adhesive. Angle the pick downward to keep the pick from sliding into the plate.

    • Slice the adhesive to the right of the camera.

  18. Samsung Galaxy S21 5G Antenna Replacement, Remove the back cover: adım 18, 2 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Remove the back cover: adım 18, 2 resimden 2.
    • Remove the back cover.

    • If your back cover is still sticking to the frame, slide the pick around the edges of the phone until the back cover completely separates.

    • 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. Use some high concentration (over 90%) isopropyl alcohol to wipe away any adhesive residue.

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

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

  19. Samsung Galaxy S21 5G Antenna Replacement, Unfasten the motherboard bracket: adım 19, 1 resimden 1.
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    • Use a Phillips screwdriver to remove the five 4 mm-long screws securing the motherboard bracket to the frame.

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

  20. Samsung Galaxy S21 5G Antenna Replacement, Unclip the motherboard bracket: adım 20, 2 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Unclip the motherboard bracket: adım 20, 2 resimden 2.
    • Use a pair of tweezers to gently pull up and unclip the motherboard bracket from the frame.

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

  21. Samsung Galaxy S21 5G Antenna Replacement, Disconnect the battery: adım 21, 2 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Disconnect the battery: adım 21, 2 resimden 2.
    • 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.

    • Take care to pry only under the edge of the connector to prevent damaging the socket itself and surrounding components.

    • 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. Samsung Galaxy S21 5G Antenna Replacement, Disconnect the wireless charging coil: adım 22, 2 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Disconnect the wireless charging coil: adım 22, 2 resimden 2.
    • 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.

  23. Samsung Galaxy S21 5G Antenna Replacement, Remove the wireless charging coil: adım 23, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Remove the wireless charging coil: adım 23, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement, Remove the wireless charging coil: adım 23, 3 resimden 3.
    • The wireless charging coil is secured to the phone with light adhesive.

    • Use your fingers to gently peel the wireless charging coil away from the phone.

    • During reassembly, refasten the motherboard bracket screws first to properly align the charging coil into place, then firmly press the rest of the coil down to adhere it.

  24. Samsung Galaxy S21 5G Antenna Replacement, Unfasten the 5G brackets: adım 24, 1 resimden 1.
    • Use a Phillips screwdriver to remove the three 3.5 mm screws securing the 5G antenna brackets to the frame.

  25. Samsung Galaxy S21 5G Antenna Replacement, Disconnect the left 5G antenna cable: adım 25, 2 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Disconnect the left 5G antenna cable: adım 25, 2 resimden 2.
    • Use the flat end of a spudger to pry up and disconnect the 5G antenna cable's press connector.

  26. Samsung Galaxy S21 5G Antenna Replacement, Remove the left 5G antenna: adım 26, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Remove the left 5G antenna: adım 26, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement, Remove the left 5G antenna: adım 26, 3 resimden 3.
    • Use the point of a spudger to pry up on the left 5G antenna bracket's bottom screw tab.

    • Use tweezers, or your fingers, to remove the left 5G antenna.

  27. Samsung Galaxy S21 5G Antenna Replacement, Disconnect the right 5G antenna cable: adım 27, 2 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Disconnect the right 5G antenna cable: adım 27, 2 resimden 2.
    • Use a spudger to pry up and disconnect the 5G antenna cable's press connector.

  28. Samsung Galaxy S21 5G Antenna Replacement, Remove the right 5G antenna: adım 28, 3 resimden 1. Samsung Galaxy S21 5G Antenna Replacement, Remove the right 5G antenna: adım 28, 3 resimden 2. Samsung Galaxy S21 5G Antenna Replacement, Remove the right 5G antenna: adım 28, 3 resimden 3.
    • Use the point of a spudger to pry up on the right 5G antenna bracket's top edge.

    • Use tweezers, or your fingers, to remove the right 5G antenna.

Sonuç

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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