Samsung Galaxy M31 Battery Replacement

Insert a SIM eject tool, SIM eject bit, or a straightened paper clip into the hole on the SIM tray located at the left side of the phone.

• Press firmly to avoid damaging the SIM tray.

• The tray should eject with a slight click or snap sound.

Locate the bottom edge of the phone.

• Insert an opening pick between the phone assembly and the back cover.
• Slide the opening pick around the bottom right corner to release the clips.

Insert a second opening pick between the back cover and phone assembly at the bottom edge.

• Slide the pick around the bottom left corner to release the plastic clips.

Insert an opening pick into the gap between the phone's frame and the back cover.

• Gently slide the opening pick along the left edge of the phone to release the plastic clips on the left side of the back cover.

• Hold the opening pick at a shallow angle and slide it along the right edge of the phone.
• This will release the plastic clips holding the back cover in place on the right side.

The flex cable for the fingerprint sensor is prone to disconnect during removal.

• Slowly lift the phone assembly out of the back cover.
• Reassemble by powering on the phone and testing functions before reinstalling the back cover.
• Prior to continuing, ensure the phone is powered down completely.

Remove 7 Phillips #00 screws, 3.9mm in length.

Insert the opening pick under the top edge of the motherboard cover.

• Pry up the motherboard cover using the opening pick.
• Remove the motherboard cover.

Use the flat end of a spudger to pry up and loosen the battery flex cable

• Once loose, carefully pull the connector away from its socket.

Insert the flat end of a spudger under the display flex cable.

• Pry the cable up gently but firmly until it is fully disconnected.

Insert the flat end of a spudger under the interconnect flex cable to pry it loose.

• Fold both cables down towards the bottom edge of the phone for easier access to the battery.

Apply iOpener to screen and heat for 2+ minutes.

• Apply even heat to loosen adhesive under battery.

Avoid damaging the battery, as it may leak chemicals, catch fire, or explode.

• Insert a spudger between the daughterboard cover and battery at the bottom left corner.
• Pry up the battery carefully until a small gap forms underneath.
• Slide a plastic card into this new gap to further release the battery.

• Insert a plastic card under the battery, using it to cut any remaining adhesive.
• Pry the battery loose with the plastic card.

Remove the battery.

Never reinstall a damaged or deformed battery — potential safety hazard.

• Temporarily reconnect battery to aid in alignment.
• Adhere battery to phone and then disconnect.
• Continue reassembling your phone, leaving the battery disconnected.