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Introduction

Use this guide to replace a damaged or broken rear glass panel on your Samsung Galaxy S21 Plus.

This guide was performed on the SM-G996B/DS (international) model. Other models have an additional antenna cable sitting in the edge of the midframe.

If you do not replace the adhesive seals when reassembling, your device will function normally, but will most likely lose its liquid ingress protection.

You’ll need replacement adhesive to reattach components when reassembling the device.

  1. Prepare an iOpener and apply it to the rear glass for at least three minutes to loosen the adhesive underneath.
    • Prepare an iOpener and apply it to the rear glass for at least three minutes to loosen the adhesive underneath.

    • 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. Secure a suction handle to the bottom edge of the rear glass, as close to the edge as possible. If the rear glass is cracked, the suction handle may not stick. Try lifting it with strong tape, or superglue the suction handle in place and allow it to cure so you can proceed. Lift the rear glass with the suction handle to create a small gap between the rear glass and the frame.
    • Secure a suction handle to the bottom edge of the rear glass, as close to the edge as possible.

    • If the rear glass is cracked, the suction handle may not stick. Try lifting it with strong tape, or superglue the suction handle in place and allow it to cure so you can proceed.

    • Lift the rear glass with the suction handle to create a small gap between the rear glass and the frame.

    • If you have trouble creating a gap, apply more heat to further soften the adhesive. Follow the iOpener instructions to avoid overheating.

    • Insert an opening pick into the gap you created.

    • Slide the opening pick to the bottom left corner to slice the adhesive.

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

  3. Insert a second opening pick at the bottom edge of your phone. Slide the opening pick to the bottom right corner to slice the adhesive.
    • Insert a second opening pick at the bottom edge of your phone.

    • Slide the opening pick to the bottom right corner to slice the adhesive.

    • Leave the opening picks in place to prevent the adhesive from resealing.

  4. If the adhesive becomes hard to cut, it has most likely cooled down. Use your iOpener for two to three minutes to reheat it. Insert a third opening pick at the bottom right corner of your phone. Slide the opening pick along the right edge of your phone to slice the adhesive.
    • If the adhesive becomes hard to cut, it has most likely cooled down. Use your iOpener for two to three minutes to reheat it.

    • Insert a third opening pick at the bottom right corner of your phone.

    • Slide the opening pick along the right edge of your phone to slice the adhesive.

    • Leave the opening pick in the top right corner to prevent the adhesive from resealing.

  5. When you slice near the camera assembly, insert only the tip of the opening pick (~4-5 mm) to avoid damaging or smearing the camera. Insert a fourth opening pick underneath the top right corner of your phone. Slide the opening pick along the top edge to slice the adhesive.
    • When you slice near the camera assembly, insert only the tip of the opening pick (~4-5 mm) to avoid damaging or smearing the camera.

    • Insert a fourth opening pick underneath the top right corner of your phone.

    • Slide the opening pick along the top edge to slice the adhesive.

    • Leave the opening pick in the top left corner to prevent the adhesive from resealing.

  6. Insert a fifth opening pick underneath the bottom left corner. Slide the opening pick along the left edge of the rear glass to slice the remaining adhesive. When you slice near the power button, insert only the tip of the opening pick (~3-4 mm) to avoid damaging the power and volume button flex cable.
    • Insert a fifth opening pick underneath the bottom left corner.

    • Slide the opening pick along the left edge of the rear glass to slice the remaining adhesive.

    • When you slice near the power button, insert only the tip of the opening pick (~3-4 mm) to avoid damaging the power and volume button flex cable.

  7. Remove the rear glass. Apply new adhesive where necessary after cleaning the relevant areas with isopropyl alcohol (>90%).
    • Remove the rear glass.

    • Apply new adhesive where necessary after cleaning the relevant areas with isopropyl alcohol (>90%).

    • Secure the new rear glass with pre-cut adhesive or double-sided adhesive tape. After installing the rear glass, apply strong, steady pressure to your phone for several minutes to help the adhesive form a good bond.

Conclusion

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

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.

Dominik Schnabelrauch

Member since: 11/23/2016

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