OnePlus 8 Daughterboard Replacement

Power off your phone and unplug any cables before proceeding.

• Apply heat to the rear glass for two minutes using an iOpener.
• You can also use a hair dryer, heat gun, or hot plate, but be aware that extreme heat may damage the display and internal battery.

Apply a suction handle to the center of the bottom edge of the rear glass, as close to the edge as possible.

If your display is badly cracked, cover it with clear packing tape for better suction or use very strong tape instead.

As a last resort, apply superglue directly to the suction cup and attach it to the broken screen.

• Pull up on the suction handle with strong, steady force to create a gap between the rear glass and frame.
• Insert an opening pick into the gap.

Place the opening pick at the bottom right corner and gently slide it under the adhesive.

Do not remove the opening pick until the repair is complete, as this will allow the adhesive to reseal.

• Position the opening pick at the bottom right corner to slice the adhesive.
• Leave the opening pick in place to prevent re-adhesion.

Insert another opening pick at the bottom edge of the rear glass, into the existing gap.

• Slide the new opening pick to the bottom left corner to cut the adhesive.
• Leave it in place to prevent resealing of the adhesive.

Reheat the iOpener and apply it for 2 minutes if slicing is difficult.

• Reheating may cause iOpener to expand — be cautious when handling.

• Insert a new opening pick under the bottom left corner of the rear glass.
• Slide the pick up the left edge, slicing the adhesive.
• Leave one opening pick in place, positioned at the top left corner, to prevent resealing.

Insert a fourth opening pick into the top left corner of the rear glass.

• Slide the pick along the top edge, slicing through the adhesive.
• Leave the pick in place at the top right corner to prevent resealing.

• Insert a fifth opening pick into the top right corner of the rear glass.
• Slide it down the right edge to cut through any remaining adhesive.

Remove the rear glass.

• If stuck, slide an opening pick around the entire perimeter until the rear glass separates completely.
• During reassembly:
• Secure the rear glass with pre-cut adhesive or double-sided adhesive tape.
• Apply strong, steady pressure to your phone for several minutes after installing the rear glass.

Check the right edge of the motherboard cover for a white sticker covering a screw.

• Pierce the sticker with your screwdriver tip or use tweezers to remove it.
• Use a Phillips screwdriver to remove the eleven 3.3 mm-long screws.

Be careful not to damage the motherboard cover or its clips.

• Insert the flat end of a spudger under the center of the motherboard cover's bottom edge.
• Twist the spudger to release the clips.
• Lever the motherboard cover up until you can grip it with your fingers.

Remove the motherboard cover.

Avoid damaging the motherboard — do not press down in the middle.

• Disconnect the battery cable using a spudger, prying the connector straight up from its socket on the bottom left corner of the motherboard.
• To reattach, carefully align the connector and press down on one side until it clicks into place; repeat on the other side.
• Ensure proper alignment to avoid pin bending and permanent damage.

Check for a white sticker covering a screw on the top right corner of the loudspeaker.

• Pierce through it with the tip of your screwdriver or use tweezers to remove.
• Remove the seven screws secured with a Phillips driver. Each screw is approximately 3.3 mm long.

Locate the plastic clips holding the loudspeaker in place.

• Insert an opening pick under the center of the loudspeaker's top edge.
• Pry up to release the clips, levering the speaker upwards until you can grasp it with your fingers.

Remove the loudspeaker.

Insert SIM eject tool, bit, or straightened paper clip into the SIM card tray hole.

• Press firmly to eject the tray.

Remove the SIM card tray from the phone.

A damaged or missing gasket can compromise water and dust protection – replace if necessary to prevent damage to internal components.

• Insert the SIM card into the tray, ensuring proper orientation before reinserting the tray into the phone.

Use a spudger to pry the antenna board cable connector straight up from its socket on the daughterboard.

Disconnect the fingerprint reader cable from the daughterboard using a spudger.

• Pry the connector straight up from its socket.

Disconnect the interconnect cable from the daughterboard using a spudger.

• Pry the connector straight up from its socket.

• Use a spudger to disconnect the black antenna cable by prying the metal head of the connector straight up from its socket on the motherboard.
• Pry only on the metal heads of the connectors, avoiding the cables themselves.

Do not touch or damage the delicate antenna cable during removal.

• To reconnect an antenna cable, hold it in place over its socket and press down with the flat end of your spudger to secure the connector.

Use tweezers or your fingers to carefully remove the black antenna cable from its clip on the daughterboard.

Disconnect the white antenna cable by prying its connector straight up from the motherboard with a spudger.

• Lift the white antenna cable out of its clip on the daughterboard using a pair of tweezers or your fingers.
• During reassembly, push the antenna cables into their channels on the right edge before pressing them into their clips.

Remove the screw holding the daughterboard using a Phillips driver.

• Place the point of a spudger under the top right corner of the daughterboard.
• Pry upwards to release the daughterboard.

Remove the daughterboard using a pair of tweezers or your fingers.

• Clear any cables connected to the daughterboard before reinstalling.