Samsung Galaxy S21 Ultra Charging Board Replacement

Unplug and power off your phone before starting.

Be cautious when applying heat as the display and internal battery can be damaged by excessive heat.

• Apply an iOpener to the back cover for at least three minutes to loosen the adhesive.
• Alternatively, use a hair dryer, heat gun, or hot plate, but avoid overheating.

Attach a suction handle to the back cover's edge, near the edge.

• If the back cover is badly cracked, apply clear packing tape for better adhesion.
• Lift the back cover with the suction handle, creating a small gap between it and the frame.

Avoid overheating when using heat: follow iOpener instructions carefully.

• Insert an opening pick into the created gap.
• Move the opening pick to the bottom left corner to cut through the adhesive.
• Leave the opening pick in place to prevent resealing of the adhesive.

Insert another opening pick at the bottom edge.

• Slide it to the bottom right, slicing the adhesive.
• Leave them in place to stop reseal.

Check if the iOpener has cooled down.

• Reheat it for two to three minutes.
• Insert a third opening pick at the bottom right corner of your phone.

Slide the opening pick along the right edge to slice the adhesive, leaving it in place at the top right corner.

When slicing near the camera assembly, insert only the tip (~ 4-5 mm) of an opening pick.

• Insert a fourth opening pick underneath the top right corner of your phone.
• Slide the opening pick along the top edge to slice the adhesive.
• Leave the opening pick in the top left corner to prevent resealing.

Insert a fifth opening pick underneath the top left corner.

• Slide the opening pick along the left edge of the back cover to slice the remaining adhesive.
• Near the power button, insert only the tip of the opening pick (~ 3-4 mm) to avoid damaging the power and volume button flex cable.

Remove the back cover.

• Power on your phone and test all functions during reassembly.

• Make sure to power down completely before continuing work.

• Use tweezers or fingers to remove adhesive chunks.

When cleaning, use high concentration (over 90%) isopropyl alcohol to wipe away adhesive residue.

• If using custom-cut adhesives, follow the provided guide.
• If using double-sided tape, follow the specific guidelines for its application and removal.

Insert the opening pick under the NFC antenna and charging coil assembly's left bottom end.

• Slide the opening pick along the bottom left edge of the assembly, being careful to separate it from the battery.

Insert a opening pick at the bottom end of the NFC antenna and charging coil assembly.

• Slide the pick along the bottom edge of the assembly, separating it from the loudspeaker.

Disconnect the charging coil connector with a spudger, prying it straight up from its socket.

Disconnect the NFC antenna using a spudger, prying the connector straight up from its socket.

Remove the NFC antenna and charging coil assembly by taking out the five 3.9 mm screws using a Phillips screwdriver.

Remove the NFC antenna and charging coil assembly using a pair of tweezers or your fingers.

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

Remove the loudspeaker assembly using a Phillips screwdriver.

• Loosen and remove the four screws, each with a length of 3.9 mm.

Insert a spudger into the gap between the top edge of the loudspeaker assembly and the midframe.

• Loudspeaker assembly may still be slightly attached, use your spudger to gently pry it up by tilting it downwards.

Remove the loudspeaker assembly.

• Apply new adhesive to cleaned surfaces during reassembly.
• Clean relevant areas with isopropyl alcohol (greater than 90% concentration) before applying adhesive.

Check if you need to proceed with this step.

• Use a spudger to pry the display flex cable connector straight up from its socket.

Disconnect the main and interconnect flex cables using a spudger.

• Pry their upper connectors straight up from their sockets.

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

• Use fingers or a pair of tweezers to carefully remove the interconnect flex cable.

Disconnect the main flex cable from the daughterboard by lifting its bottom connector straight up from its socket using a spudger.

• Once disconnected, use your fingers or a pair of tweezers to carefully remove the main flex cable.

Insert a SIM card eject tool, a SIM eject bit, or a straightened paper clip into the SIM tray hole located at the bottom edge of the phone.

Press directly into the hole to avoid damaging the tray. Eject the SIM card tray.

Locate and remove the SIM card tray.

• Remove the three screws secured to the charging board using a Phillips screwdriver.
• The screws are approximately 3.4 mm long.

Be careful when prying the charging board — risk of damage.

• Insert the pointed end of a spudger underneath the left edge of the charging board.
• Pry up the charging board using your spudger.

Use tweezers or your fingers to lift the charging board by its top edge and gently slide the USB-C connector out of its recess.

• Clean the areas with isopropyl alcohol (>90%) before reassembly.
• Apply new adhesive as needed after cleaning.