Samsung Galaxy S10 Logic Board Repair

Insert a SIM card eject tool, SIM eject bit, or a straightened paperclip '''into the hole on the SIM tray''', located at the top edge of the phone next to the plastic antenna band.

If you inserted the tool [https://d3nevzfk7ii3be.cloudfront.net/igi/DZCXvOiICA6LHLMS.medium|into the other hole|new_window=true], don't worry—the microphone and the ingress seal are mounted out of harm's way.

Press firmly to eject the tray.

Remove the SIM card tray.

When reinserting the SIM card, ensure that it is in the proper orientation relative to the tray.

Unplug and power off your phone before you begin.

A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the phone—the display and internal battery are both susceptible to heat damage.

As you wait, take a look at the image of the removed back cover and take note of where the adhesive is located.

Rest the heated right edge of the phone on something that is about 0.5 inches (13 mm) thick. This angles the phone for the opening tool.

Brace the left edge of the phone with your fingers so that the phone won't slide. Pull on the suction cup with firm pressure.

Press the edge of an opening tool into the seam between the back cover and the frame.

With the opening tool in place in the seam, slide it back and forth along the seam to loosen the back cover.

Heat an iOpener and apply it to the same edge of the phone for two minutes.

Apply a suction cup to the back of the phone, as close to the center of the right edge as possible ([https://d3nevzfk7ii3be.cloudfront.net/igi/D5lNQoWPOgOCEAPO.full|where the adhesive is narrowest|new_window=true]).

Pull on the suction cup with strong, steady force to create a gap between the back cover and the frame.

Insert the point of an opening pick into the gap.

Due to tight tolerances and strong adhesive, multiple attempts may be necessary to create a gap for the opening pick.

If you are having trouble creating a gap, the adhesive isn't weakened enough. Make sure you have heated the edge until just barely too hot to touch try this step again.

You can try applying a few drops of high concentration (over 90%) isopropyl alcohol into the seam to help loosen the adhesive.

Do not apply excessive force with the pick, or you will risk cracking the back cover glass.

Slide the opening pick along the edge of the phone, slicing through the adhesive.

Do not attempt to slice the adhesive holding the corners down before applying heat. If you do, you may crack the back cover.

Leave a pick in the seam to prevent the adhesive from re-sealing.

Apply a heated iOpener to the bottom edge of the phone for two minutes.

Insert an opening pick into the right edge near the bottom right corner.

Carefully slide the pick around the corner. Continue cutting along the bottom edge and around the bottom left corner.

If the cutting feels difficult, re-apply heat to the edge before continuing.

Leave an opening pick in the seam to prevent the adhesive from re-sealing.

Continue heating and slicing around the remaining edges of the phone.

When cutting around corners, be sure that the corner is thoroughly heated.

Once you have sliced around the phone, twist an opening pick in one of the edges to help separate the back cover from the frame.

Lift the back cover slowly. Use opening picks to slice any remaining adhesive.

Remove the back cover.

During reassembly, this is a good point to power on your phone and test all functions before you seal the back cover in place. Be sure to power your phone back down completely before you continue working.

If desired, you may reinstall the back cover without replacing the adhesive. Remove any large chunks of adhesive that might prevent the back cover from sitting down flush. After installation, heat the back cover and apply pressure to secure it.

Remove the eight 4 mm Phillips screws securing the top midframe to the phone.

The midframe is still held in place by a few plastic clips around the edge.

Insert the point of a spudger into the notch on the right edge of the midframe, near the volume up button.

Pry up to loosen the midframe from the phone.

Lift the midframe from the top corners and remove it from the phone.

The top midframe may stick to the lower midframe at its bottom right corner. If that happens, slowly peel it off.

To reinstall the top midframe:

Insert the flat end of a spudger underneath the battery connector, which is attached to the motherboard below the rear-facing camera.

Pry upwards to disconnect the connector from its socket.

When you disconnect connectors like these, be careful not to dislodge the small surface-mounted components surrounding the socket.

Gently push the battery's flex cable away from the motherboard socket to prevent accidental contact.

Remove the seven 4 mm Phillips screws securing the lower midframe.

The midframe is still held in place by a few plastic clips around the edge.

Insert the point of a spudger underneath the top right corner of the lower midframe.

Pry up to release the midframe from the phone.

Grasp the loosened end of the midframe with your fingers and lift upwards slowly.

Wiggle the midframe slightly to help release the remaining edge clips.

Remove the lower midframe. The loudspeaker is built into the lower midframe.

Use the flat end of a spudger to pry up and disconnect the display connector from its motherboard socket, located near the bottom right corner of the phone.

Use the point of a spudger to pry up and disconnect the headphone jack's connector from its motherboard socket.

Remove the three 3.7 mm Phillips screws securing the motherboard to the phone.

Insert the point of a spudger underneath the right edge of the motherboard, near the volume down button.

Pry up gently to loosen the motherboard from its recess.

Insert the point of a spudger under bottom left corner of the motherboard.

Pry up gently to loosen the motherboard from its recess.

Using your fingers, grasp the motherboard by the top corners.

Swing the motherboard slightly out of its recess. '''Be careful not to snag any cables along the way.'''

Pull the motherboard towards the top edge of the phone while wiggling the board slightly. This will loosen the charging port from its socket.

Once the charging port is freed from its socket, remove the motherboard.

To reinstall the motherboard:

Align the motherboard's charging port with the bottom edge of the phone.

Lower the motherboard and press into place. '''Be careful not to trap any cables underneath the motherboard.''' The board should sit flush against the frame.