Samsung Galaxy S9 Plus Battery Replacement

Switch off your phone.

• iOpener: Apply for at least two minutes to loosen rear glass adhesive.
• If necessary, repeat step 1 several times during back cover removal.
• Alternatively, use a heat source (hair dryer, heat gun, or hot plate) with caution: be careful not to overheat phone.

Heat damage risk for AMOLED display and internal battery.

Avoid damaging the fingerprint sensor flex cable when cutting adhesive.

• Slice through thick portions of adhesive as shown in the image.
• Target thin areas of adhesive for removal.

Apply strong tape or superglue to the suction cup if rear glass is cracked.

• Suction Cup: Press onto back cover.
• Lift bottom edge with suction cup, creating a small gap between back cover and frame.
• Apply more heat if necessary; repeat as adhesive cools quickly.

Use only slight force to open the gap, as excessive force can damage components.

• Insert an opening pick into the gap at bottom right corner and slide it towards the edge.

• Insert a second opening pick near the bottom left corner.
• Place a third opening pick at the phone's bottom edge, where it will stay throughout the process to prevent adhesive resealing.

Insert the opening pick into the bottom left corner, working along the side of the S9 Plus.

• Leave the pick in place when you cut the adhesive halfway up the left side of the phone.
• Move to the bottom right corner and insert the opening pick halfway up the frame, leaving it there.

Insert a fourth opening pick at the right side of the frame and slide it to the top right corner.

• Slide a fifth opening pick along the left side of the phone to the top left corner.
• Use the opening pick to cut the remaining adhesive under the upper part of the rear glass.

Do not open the phone all the way yet, as the flex cable for the fingerprint reader is still connected to the motherboard.

Locate the volume button.

Pry up the corresponding section of the rear glass using the edge of a spudger.

• Use the spudger to disconnect the fingerprint sensor flex cable

Remove the rear glass.

• When reassembling, refer to the guide for replacing the adhesive and reinstalling the rear glass.
• To replace the rear glass, transfer the rear camera bezel including the fingerprint using the guide provided.

Remove all nine 4 mm Phillips #00 screws.

Insert an opening pick under the right side of the plastic cover.

• Flip the opening pick sideways to lift the cover out of its plastic clips.
• Pry around the cover, releasing the remaining plastic clips.

Remove the plastic cover to access the NFC antenna and charging coil.

Use the flat end of a spudger to gently pry up the battery flex cable, then disconnect it.

Apply iOpener to loosen battery adhesive for at least 2 minutes.

• Use spudger only in areas marked with red paint on the device.
• Avoid using spudger near mid-frame gap below the battery, as this can damage display.

Soft-shell lithium-ion batteries can leak dangerous chemicals, catch fire, or explode if damaged.

• Apply 1-2 drops of high-concentration isopropyl alcohol under each battery corner to weaken adhesive (allow penetration time).

Do not use excessive force or pry at the battery with metal tools.

• Insert the flat end of a spudger into the top left corner, near the flex cable.
• Pry up using firm, constant pressure and work down the left side to loosen adhesive.

Insert the plastic spudger into the top right corner of the battery.

Pry upwards to avoid damaging the surrounding components.

Do not reuse removed batteries — potential safety hazard.

Remove the battery.

• Allow isopropyl alcohol to evaporate for 10 minutes before installing a new battery.
• Install a new battery and adhesive according to this guide.