Samsung Galaxy A53 5G Daughterboard Replacement

Prepare an iOpener and apply it to the back cover for at least two minutes.

• The adhesive underneath should start to loosen.

Be careful not to overheat the phone, as the display and internal battery are susceptible to heat damage when using a hair dryer, heat gun, or hot plate.

Secure a suction handle to the right edge of the back cover.

• Lift the back cover with the suction handle to create a small gap between the back cover and the frame.
• If necessary, apply more heat using an iOpener to soften the adhesive further.
• Insert an opening pick into the created gap.

Slide the opening pick to the top right corner to cut the adhesive.

Do not remove the opening pick; this will cause the adhesive to seal again.

Insert a second opening pick at the top right edge.

• Slide it down to the bottom right corner, cutting the adhesive.
• Leave both picks in place to prevent re-adhesion.

Avoid damage by only using a iOpener when necessary.

• If the adhesive becomes hard to cut, use your iOpener for 1-2 minutes to reheat it.
• Insert an additional opening pick at the bottom right corner of your phone.
• Slide this new opening pick along the bottom edge to slice the adhesive.
• Leave one in the bottom left corner to prevent resealing.

• Insert a new opening pick into the bottom left corner.
• Slide the opening pick along the left edge to cut the adhesive.

Leave the tool in place at the top left corner to prevent resealing.

• Insert a fifth opening pick into the top left corner.
• Slide the opening pick along the top edge, slicing any remaining adhesive.

Remove the back cover.

• Clean relevant areas with isopropyl alcohol (at least 90% concentration) before applying new adhesive.
• Apply new adhesive where needed to secure the new back cover, using either pre-cut adhesive or double-sided tape.

Apply steady, strong pressure to your phone for several minutes after installing the back cover to ensure proper bond.

• A stack of heavy books can be used to provide sufficient pressure.

Remove the motherboard cover with an 8mm deep socket or Phillips driver.

• Screw size: 3.9 mm long
• Number of screws: 8

Insert the flat end of a spudger into the gap between the frame and the motherboard cover on the right edge.

• Pry up the motherboard cover using the spudger.

Remove the motherboard cover.

Disconnect the battery cable using a spudger, prying the connector straight up from its socket.

• Remove the seven 3.9 mm screws using a Phillips screwdriver.

• Insert the flat end of a spudger into the gap between the right edge of the loudspeaker assembly and the midframe.
• Pry up the loudspeaker assembly using your spudger.
• Remove the loudspeaker assembly.

Loosen the fingerprint sensor adhesive using an iOpener applied to the display for at least two minutes.

Be cautious when using a hair dryer, heat gun, or hot plate as excessive heat can damage the phone's display and internal battery.

Disconnect the fingerprint sensor from the daughterboard using the flat end of a spudger.

Insert the flat end of a spudger into the fingerprint sensor's socket.

• Pry the fingerprint sensor straight out of its socket.
• Use a pair of tweezers or your fingers to remove the fingerprint sensor.

Use blunt nose tweezers to disconnect black and white antenna cables from daughterboard.

• Grab metal ends, not cable itself, to avoid damage.
• Reassembly may require pressing connectors with flat spudger end into place.

Be careful when handling sensitive components to avoid damage or electrical shock.

Locate and carefully lift the interconnect cable connectors using the flat end of a spudger.

Be careful not to damage the connectors or the motherboard.

Insert a SIM card eject tool or a paperclip into the small hole in the SIM card tray, located on the bottom right corner of the phone.

• Press firmly to eject the tray.
• Remove the SIM card tray from the phone.

Use a spudger with the flat end to carefully lift the display connector off its adhesive hold on the daughterboard.

• The connector is held in place by mild adhesive.

Remove the daughterboard with a Phillips screwdriver.

• There are two screws; they are both 2.9mm long and secured to the daughterboard.
• Use a Phillips screwdriver to remove them.

Remove the daughterboard with your fingers.