Samsung Galaxy S8 Rear Glass Replacement
By Sam Lionheart • Difficulty: Moderate

Drop your S8? Keep it in the same pocket as your keys?

Chances are the glass back is already shattered. Use this guide to replace the back panel glass on the Samsung Galaxy S8.

If your replacement part does not come with adhesive mounted on it, you will also need to purchase adhesive for the rear glass and the fingerprint reader. You can buy pre-cut adhesive, or thin high-bond tape.

Step 1
  • We recommend that you clean your microwave before proceeding, as any nasty gunk on the bottom may end up stuck to the iOpener.
  • Place the iOpener in the center of the microwave.
  • For carousel microwaves: Make sure the plate spins freely. If your iOpener gets stuck, it may overheat and burn.
Step 2
  • Heat the iOpener for thirty seconds.
  • Throughout the repair procedure, as the iOpener cools, reheat it in the microwave for an additional thirty seconds at a time.
  • Be careful not to overheat the iOpener during the repair. Overheating may cause the iOpener to burst.
  • Never touch the iOpener if it appears swollen.
  • If the iOpener is still too hot in the middle to touch, continue using it while waiting for it to cool down some more before reheating. A properly heated iOpener should stay warm for up to 10 minutes.
Step 3
  • Remove the iOpener from the microwave, holding it by one of the two flat ends to avoid the hot center.
  • The iOpener will be very hot, so be careful when handling it. Use an oven mitt if necessary.
Step 4
  • Apply a heated iOpener to a long edge of the S8 for about 2 minutes.
  • You may need to reheat and reapply the iOpener several times to get the phone warm enough. Follow the iOpener instructions to avoid overheating.
  • As you're waiting for the adhesive to soften, move on and read the following step to get an idea of where to pry.
Step 5
  • In the following steps you will be cutting through the adhesive around the edge of the rear glass panel.
  • The adhesive on the rear case is laid out as seen in the first image.
  • The prying pattern as seen from the outside of the phone is as follows:
  • Thick portions of adhesive
  • Thin areas of adhesive
  • Avoid prying here, to protect the fingerprint sensor.
Step 6
  • Once the back panel is warm to the touch, apply a suction cup as close to the heated edge of the phone as you can while avoiding the curved edge.
  • The suction cup will not make a good seal on the curved portion of the glass.
  • Lift on the suction cup, and insert a halberd spudger, or opening pick, under the rear glass.
  • Due to the curved glass, you will be pushing up, rather than inserting parallel to the plane of the phone.
Step 7
  • Once you have the tool firmly inserted into the glass, reheat and reapply the iOpener to soften the adhesive.
Step 8
  • Slide the blade of a Halberd spudger down the side of the phone, separating the adhesive.
  • Go slowly so that the tip doesn't slip out of the seam. If cutting becomes difficult, reheat and reapply the iOpener.
Step 9
  • Repeat the previous heating and cutting procedure for the remaining three sides of the phone.
  • Leave an opening pick on each side as you continue to the next to prevent the adhesive from resealing.
Step 10
  • The fingerprint sensor cable connects the phone to the rear glass near the main camera. The cable is very short and should disconnect as the rear glass is removed.
  • As you lift the glass, peek in to be sure the orange cable with a blue connector has disconnected.
  • Use the opening picks to slice through any remaining adhesive and open the phone slightly.
  • If the fingerprint sensor cable seems snagged or stays taut do not open the phone any further. Disconnect the connector with the point of a spudger before proceeding.
  • Remove the glass from the phone.
Step 11
  • Before replacing your rear glass you will need to remove the old adhesive from the phone body.
  • After removing the old adhesive, clean the edges of the phone body with high concentration isopropyl alcohol (at least 90%), then apply the new adhesive.
Step 12
  • Reheat an iOpener and apply it to the fingerprint sensor mounted to the rear glass.
  • Push the fingerprint sensor off of its adhesive from the outside of the glass.
  • If the sensor is stubborn, gently slide a halberd spudger under the plastic backing to loosen the adhesive before pushing.
  • This will make the adhesive less likely to be reusable, so try pushing with your finger first.
Step 13
  • If the fingerprint sensor adhesive is intact, it may be reused, but if damaged at all you should remove the old adhesive and apply replacements.
  • After removing the old adhesive, clean the edges of the fingerprint sensor with high concentration isopropyl alcohol (at least 90%), then apply the new adhesive.

After reapplying adhesive, follow these instructions in reverse order to reassemble your device.