OnePlus 9 5G Daughterboard Replacement

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

• Press firmly on the inserted item to eject the tray.

Remove the SIM card tray from the phone.

• When reinserting the SIM card, ensure it's properly aligned within the SIM tray.

A damaged or missing rubber gasket around the SIM tray can compromise water and dust protection, potentially harming internal components. Replace the gasket or the entire SIM tray as needed.

Completely power off your phone before proceeding.

• Prepare an iOpener and apply it to the rear glass for at least three minutes to loosen the adhesive underneath.
• Alternatively, use a hair dryer, heat gun, or hot plate – but be cautious not to overheat the phone, as this can cause damage to the display and internal battery.

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

• If the rear glass is badly cracked, cover it with clear packing tape for better adhesion.
• Use strong tape instead of a suction handle if needed.
• As a last resort, superglue the suction handle to the broken rear glass.

Excessive heat can damage the adhesive; use it only as a last resort.

• Pull up on the suction handle with strong, steady force to create a gap between the glass and frame.
• Apply more heat if necessary to further soften the adhesive.

Insert an opening pick into the gap.

Insert the opening pick into the bottom right corner and gently slice through the adhesive.

Do not remove the opening pick until the repair is complete, as the adhesive may reseal otherwise.

Insert opening pick at bottom edge of rear glass.

• Slide opening pick to bottom left corner, slicing adhesive.
• Leave opening picks in place to hold adhesive separated.

Reheat the adhesive with your iOpener if it's hard to cut.

• Place an opening pick under the bottom left corner of the rear glass.
• Slide the pick along the left edge to slice the adhesive.

Leave the pick in place to prevent resealing of the adhesive.

Position the opening pick at the top left corner of the rear glass.

• Slide it along the top edge, slicing the adhesive as you go.
• Leave the opening pick in place to prevent re-adhesion in the top right corner.

Insert a fifth opening pick under the top right rear glass corner.

• Guide the pick down the right edge, slicing remaining adhesive on the back cover.

Remove the rear glass.

• If stuck, slide an opening pick around the entire perimeter until the rear glass separates completely.
• Secure with pre-cut adhesive or double-sided tape during reassembly.
• Apply strong pressure to your phone for several minutes after installation to ensure proper bonding. Use a stack of heavy books as a pressing aid.

Use tweezers to gently lift and remove the bottom right corner of the charging coil tape from the daughterboard cover.

Remove the bottom left corner of the charging coil tape from the loudspeaker using a pair of tweezers.

Locate the mild adhesive holding the flash assembly in place and the motherboard cover screw it covers.

• Careful sliding an opening pick underneath the bottom edge of the flash assembly to pry it up, without attempting complete removal.

• Do not attempt to remove the flash assembly all the way yet, as its cable is adhered to the motherboard cover.

Remove the motherboard cover using a Phillips screwdriver.

• Remove ten 3.8 mm screws from the motherboard cover.
• If a water ingress sticker covers one of the screws, puncture it with your screwdriver to access the screw.

Locate the plastic clips holding the motherboard cover in place.

• Insert a spudger underneath the bottom right edge of the motherboard cover.
• Pry upwards to loosen the motherboard cover and create a gap.

Insert an opening pick under the bottom right edge of the motherboard cover.

• Slide the opening pick along the right edge of the motherboard cover.
• Twist and pry up to release the plastic clips, then lift off the motherboard cover.

Remove the motherboard cover using a pair of tweezers or your fingers.

The charging coil may detach from the cover during removal.

Be careful when handling connectors to avoid pin bending.

• Disconnect the battery cable using a spudger to pry the connector straight up from its socket on the bottom left corner of the motherboard.
• To reconnect, carefully align the connector and press down on one side until it clicks into place, then repeat on the other side; avoid pressing in the middle.

Remove the daughterboard cover using a Phillips screwdriver.

• There are five screws, each 3.8 mm in length.
• If one of the screws is covered by a white sticker, use your screwdriver to carefully puncture the sticker.

Position the spudger's tip under the top-right corner of the daughterboard cover.

• Pry upward gently to release the cover.

Remove the daughterboard cover with a pair of tweezers or your fingers.

Use a spudger to carefully pry the interconnect cable connector straight up out of its socket on the motherboard.

• Insert the tip of a pair of tweezers under the metal bracket.
• Lift the metal bracket using the tweezers.
• Remove the metal bracket.

Disconnect the interconnect cable from the daughterboard using a spudger. Pry the connector straight up from its socket.

Remove the interconnect cable with tweezers or your bare fingers.

• Disconnect the antenna board cable using a spudger, prying it straight up.
• Remove the fingerprints sensor connector from its socket by prying it straight up with a spudger.

• Insert the tip of a tweezers under the black antenna cable and gently push it towards the metal connector.
• Pry the antenna connector straight up from the daughterboard to release it.

• Insert the arm of a tweezer under the white antenna cable and push it snugly against the metal connector.
• Pry the antenna connector straight up from the daughterboard.

Remove the screw securing the daughterboard using a Phillips driver.

• The screw is 2.8 mm long.

Insert the spudger point under the top right corner of the daughterboard.

• Pry upwards gently to loosen the daughterboard.

Remove the daughterboard using blunt nose tweezers or your fingers.

Make sure all cables connecting to the daughterboard are removed before reinserting.