Phone · Samsung · Galaxy S20 Ultra
Samsung Galaxy S20 Ultra Back Cover Replacement
Back Cover Replacement guide for the Samsung Galaxy S20 Ultra
Before you begin
Tools
- Heat gun or hair dryer
- Suction cup tool
- Plastic opening picks
- Spudger tool
- Tweezers
- SIM eject tool
Parts / materials
- Replacement back cover with pre-installed adhesive
- High-purity isopropyl alcohol (90%+)
- Lint-free microfiber cloth
Safety
- Wear safety glasses to protect your eyes from fine glass splinters if the original rear cover is shattered.
- Do not heat the back of the device above 80°C (176°F) to protect the internal lithium-ion battery.
- Handle cracked glass edges with care to prevent cuts or puncture wounds.
Overview
Step-by-step
- 1
Power down the phone
1 minPress and hold the side button and volume down button, then tap 'Power off'. Ensure the phone is completely off before starting.
- 2
Eject the SIM tray
1 minInsert a SIM eject tool or paperclip into the hole at the top edge of the phone. Push firmly until the tray pops out, then remove it.
- 3
Heat the bottom edge
2 minApply heat to the lower edge of the back glass for 2 minutes using a heat gun. Keep the heat moving to avoid concentrated hotspot damage.
- 4
Attach the suction cup
1 minPress a suction cup firmly onto the lower portion of the rear glass cover. Ensure a tight seal near the bottom edge.
- 5
Create an entry gap
1 minPull up firmly on the suction cup handle to lift the back glass away from the frame. Look for a tiny gap along the bottom seam.
- 6
Insert an opening pick
2 minSlide a thin plastic opening pick into the gap created between the glass and the phone frame. Leave it in place to keep the gap open.
- 7
Slice bottom adhesive
2 minSlide the opening pick carefully along the bottom edge of the device. Cut through the factory adhesive sealant completely.
- 8
Heat the left edge
2 minApply heat to the left edge of the phone for 1 to 2 minutes to soften the side adhesive strip.
- 9
Slice left adhesive
2 minGuide the opening pick around the bottom-left corner and up along the left edge. Take care not to insert the pick deeper than 5mm.
- 10
Heat the top edge
2 minHeat the top edge of the rear glass panel for 1 to 2 minutes using your heat source.
- 11
Slice top adhesive
2 minSlide the opening pick around the top-left corner and across the top edge of the phone. Cut through the remaining top adhesive.
- 12
Heat the right edge
2 minApply heat to the right edge of the rear glass panel for 1 to 2 minutes.
- 13
Slice right adhesive
2 minGuide your pick around the top-right corner and down the right edge. Ensure all perimeter adhesive strips are completely separated.
- 14
Remove the back cover
1 minLift the rear glass cover straight up and off the phone body. Set the old back panel aside.
- 15
Clean adhesive residue
5 minDampen a microfiber cloth with isopropyl alcohol and clean off all old adhesive remnants from the frame's edge. Use a plastic spudger to scrape stubborn spots.
- 16
Prep replacement back cover
1 minPeel away the protective clear film covering the pre-installed adhesive strips on the inside of the new back panel.
- 17
Align the new cover
2 minCarefully line up the camera module housing and frame perimeter with the new back glass. Lower the panel into position gently.
- 18
Press down to seal
3 minApply firm, even pressure along all four edges and around the camera bump for a full minute to seat the new adhesive properly.
- 19
Reinsert the SIM tray
1 minSlide the SIM card tray back into its slot at the top edge of the device until it sits completely flush.
After your Samsung Galaxy S20 Ultra back cover replacement
Power the Galaxy S20 Ultra back on and test the back cover replacement function before you put every screw away. Check touch/display response, charging, cameras, buttons, and wireless as relevant to this repair. If something fails after closing the device, reopen carefully and reseat the connectors for this Samsung Galaxy S20 Ultra job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Samsung Galaxy S20 Ultra repair context in the encyclopedia, or open related DIY guides.

