Samsung Galaxy S21 Ultra NFC Antenna & Charging Coil Assembly Replacement

Do not attempt to repair your phone while it is still powered on.

• Unplug your phone from power and turn it off completely.
• Apply an iOpener to the back cover for at least three minutes to loosen the adhesive.

When using a heat source, be cautious not to overheat the phone, as the display and internal battery can be damaged by excessive heat.

Secure a suction handle to the bottom edge of the back cover, as close to the edge as possible.

• If the back cover is badly cracked, cover it with a layer of clear packing tape for better suction cup adhesion.
• Lift the back cover with the suction handle to create a small gap between the back cover and the frame.

Apply more heat if you have trouble creating a gap, following iOpener instructions to avoid overheating.

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

Insert a second opening pick near the bottom edge of your phone.

• Slide the new pick towards the bottom right corner to cut through the adhesive.
• Leave both picks in place to prevent the adhesive from resealing.

Be cautious not to touch the iOpener as it may cause burns.

• Reheat the iOpener for two to three minutes if the adhesive becomes hard to cut.
• Insert a third opening pick at the bottom right corner of your phone.
• Slide the opening pick along the right edge of your phone to slice the adhesive.
• Leave the opening pick in the top right corner to prevent resealing.

When slicing near the camera assembly, insert only the tip of the opening pick (~4-5 mm) to avoid damage or smearing.

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

Avoid damaging the power and volume button flex cable.

• Insert a fifth opening pick under the top left corner.
• Slide it along the left edge of the back cover, slicing the remaining adhesive.
• When near the power button, use only ~3-4 mm tip to avoid damage.

Remove the back cover.

Power on your phone and test all functions before reassembly to ensure correct operation.

Power down your phone completely before proceeding with further repairs.

• Use tweezers or fingers to remove any loose adhesive chunks.
• Clean the area with high concentration (over 90%) isopropyl alcohol and a lint-free cloth to remove remaining adhesive residue.

If using custom-cut adhesives, follow the linked guide for application instructions.

If using double-sided tape, refer to the related guide for correct installation procedures.

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

• Slide the pick along the bottom left edge, being careful not to damage the surrounding components.
• Continue until the NFC antenna and charging coil assembly is separated from the battery.

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

• Slide the pick carefully along the assembly's bottom edge to separate it from the loudspeaker.

Disconnect the charging coil by gently prying the connector straight up with a spudger.

Disconnect the NFC antenna by gently prying the connector upwards using a spudger.

Remove the NFC antenna and charging coil assembly using a Phillips screwdriver.

• Loosen the five 3.9 mm-long screws securing the assembly.
• Gently pry the assembly away from its mounting point once loose.

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