Samsung Galaxy S20 Ultra Motherboard Replacement

• Insert a SIM card eject tool, bobby pin or straightened paperclip into the top SIM tray hole, located next to the plastic antenna band.
• If inserted incorrectly, it won't affect the microphone or ingress gasket.
• Press firmly inwards to eject the tray.

Remove the SIM card tray.

• The SIM card will fall out easily.
• To reinsert the SIM card, ensure it is in the correct orientation relative to the SIM tray.

If the thin rubber gasket around the SIM tray is damaged or missing, replace it or the entire SIM tray to protect internal components from water and dust damage.

Unplug and power off your phone before starting.

• Heat an iOpener for 2 minutes and apply it to the back cover's bottom edge.
• Alternatively, use a hair dryer, heat gun, or hot plate, but be cautious not to overheat the phone and damage the display or internal battery.

Apply strong, steady pressure with caution — risk of damaging back cover glass.

• Attach a suction cup to the phone's back near the center of the bottom edge using clear packing tape if necessary for adhesion.
• Pull firmly on the suction cup to create a gap between the back cover and frame.

Insert an opening pick into the gap, reheating as needed due to tight tolerances. This may take multiple attempts.

• Apply more heat if necessary, then try again to separate the back cover from the frame.
• Be careful not to apply excessive force with the pick or risk cracking the back cover glass.

Slide a pick back and forth along the bottom edge to slice through the adhesive.

Avoid cutting near the curved corners, as this may crack the glass panel.

• Leave the pick in the seam after completion to prevent re-adhesion.

Heat an iOpener and apply it to the left edge of the back cover for two minutes.

Apply a suction cup to the phone's left edge, near its center.

• Pull on the suction cup firmly to create a gap between the back cover and frame.
• Insert an opening pick into the gap, ensuring only the tip is under the glass's edge.

Due to tight tolerances, this may require multiple attempts. Apply more heat if needed.

• To aid in loosening adhesive, apply a few drops of high concentration (over 90%) isopropyl alcohol into the seam.
• Do not use excessive force with the pick, as this risks cracking the back cover glass.

Insert the pick further under the glass's edge, then gently tilt it downward.

• Fully separate the back cover's adhesive for easier removal.

• Slide the pick towards the bottom edge of the phone to release the back cover's adhesive.
• Leave the pick under the left edge of the glass near the bottom, preventing the adhesive from resealing.

Careful when sliding across the ridge in the frame surrounding the volume and power buttons - the cutout in the glass may crack easily.

• Insert a pick under the center of the left edge of the back cover.
• Gradually slide the pick towards the top of the device to separate the back cover's adhesive.
• Leave your pick under the left edge of the glass near the top to prevent resealing.

Heat the phone's right edge with a iOpener for two minutes.

• Alternatively, use a hair dryer, heat gun, or hot plate.
• Be cautious not to overheat the phone and avoid damaging the display or internal battery.

Apply suction cup near right edge center.

• Pull suction cup firmly to create gap between back cover and frame.
• Insert opening pick into gap, tilting downward for full insertion underneath the back cover.

Position the pick at the bottom edge of the phone and gently slide it toward the center to release the back cover's adhesive.

• Leave the pick in place under the right edge of the glass near the bottom, as this will prevent the adhesive from resealing.

Insert a pick under the right edge center of the back cover.

• Slide the pick up towards the top to separate the adhesive.
• If the three bottom picks release, set them aside and proceed with caution as this area won't reseal.

Use a iOpener to heat the top edge of the back cover for 2 minutes.

Be gentle when handling the curved glass near the corners.

• Slide the pick from the right edge around the top right corner.
• Continue along the top edge to separate the back cover adhesive.

If slicing becomes difficult, stop and reapply heat before continuing to avoid damaging your device.

Remove the back cover by lifting it slowly.

• Use opening picks to slice any remaining adhesive.

Apply heat if removing adhesive is difficult and requires extra care.

During reassembly, power on your phone and test all functions before sealing the device.

Remove any loose adhesive chunks with tweezers or your fingers to avoid reattachment issues.

• If using Samsung custom-cut adhesives, follow specific guidelines for reattachment.
• If using double-sided tape, refer to the recommended reassembly instructions.

Be cautious when disconnecting the wireless charging coil connector using a spudger, as nearby surface-mounted components may be dislodged.

• Pry up and carefully disconnect the wireless charging coil connector with a spudger.
• Avoid damaging surrounding small components when releasing the socket's grip.

Peel the wireless charging coil away from the device using a pair of tweezers.

Risk of damage — do not touch the metal contacts during removal.

• Remove the wireless charging coil from the device.
• During reassembly, reconnect the wireless charging coil connector, then press the coil firmly into place.

Use a Phillips #00 screwdriver to remove the five magnets. Keep track of them for reinstallation.

• Each screw is 3.9 mm long.
• Label each screw so it can be returned to its original position.

Unclip the motherboard bracket using a pair of tweezers.

• Hold the bracket with one hand.
• Pry it off the board with the tweezers in your other hand.

Disconnect the battery connector with a spudger.

Remove the screws securing the loudspeaker and lower midframe using a Phillips #00 screwdriver.

• The screws are 3.9 mm long.
• There are five screws in total.

Insert the tip of a spudger or a tweezer into the notch at the top left corner of the midframe and pry up to release its clips.

• Remove the loudspeaker from the lower midframe.

Disconnect the main flex cable and auxiliary flex cable from the daughterboard near the bottom of the device using a spudger.

• Reattach press connectors by aligning them carefully and pressing down on one side until they click into place.
• Repeat the process for the other side, avoiding the middle section.

Pressing down on misaligned connectors can cause permanent damage to the pins.

Use a spudger to gently pry up and disconnect the main and auxiliary flex cables from the motherboard.

Peel up and carefully remove both main and auxiliary flex cables.

• Pry up the left 5G antenna cable
• Disconnect it from the motherboard

Disconnect the Main Display Flex Cable by prying it up from the motherboard.

Peel up the display and left 5G antenna flex cables to clear the area around the motherboard and battery.

Remove the upper midframe using a Phillips #00 screwdriver.

• There are four screws to remove.
• The screws have a length of 3.9 mm.

Insert the point of a spudger into the notch on the right side of the upper midframe.

Pry up gently to release the clips holding it in place.

• Remove the upper midframe.

• Right 5G antenna flex cable removal: Pry up and disconnect from motherboard.
• Bend cable using tweezers to clear path from motherboard.

Locate and carefully pry up the side button flex cable from its connector on the motherboard.

• Disconnect the side button flex cable from the motherboard.
• Bend the exposed cable out of the way to access other components.

Disconnect the front facing camera flex cable from the motherboard.

• Pry the camera flex cable away from the motherboard with a plastic spudger.
• Bend the cable out of the way to prevent damage or pinching.

• Pry up the upper 5G antenna cable using a suitable tool.
• Disconnect it from the motherboard.

Use the flat end of a spudger to carefully pry up one corner of the 5G millimeter wave antenna module.

• The module is secured with adhesive, but should release easily.
• Remove the 5G antenna module.

During reassembly, reconnect the 5G antenna connector first to ensure proper alignment, then press the rest of the antenna module firmly into place.

Use a Phillips #00 screwdriver to remove the two 3.9 mm long screws securing the motherboard and camera assembly.

Insert spudger tip into bottom left motherboard corner and gently pry upwards.

• Release motherboard assembly from phone body.
• Remove motherboard assembly.

Disconnect the ultrawide camera connector from the motherboard.

Be careful not to damage the camera connector pins.

• Telephoto and wide-angle camera connectors: Pry up and disconnect from the motherboard.

Turn the motherboard assembly upside down.

• Pry up the depth sensor connector using a plastic spudger.
• Disconnect the depth sensor connector from the motherboard.

• Remove the rear-facing camera module.
• If replacing individual cameras, separate and transfer existing cameras as needed.

The motherboard is all that's left.