Samsung Galaxy S21 Ultra Laser AF module Replacement

Unplug your phone from power source.

Do not proceed until powered off completely.

• iOpener: Apply for at least three minutes to loosen adhesive underneath back cover.
• Alternatively, use a hair dryer, heat gun, or hot plate, but be cautious of overheating. The display and internal battery are prone to thermal damage.

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

• If the back cover is severely cracked, apply clear packing tape for better suction.
• Use strong tape instead of a suction cup or superglue it in place as a last resort.

Hold the back cover with the suction handle to create a small gap between the cover and frame.

Apply more heat if necessary, but be cautious not to overheat using an iOpener.

• Insert an opening pick into the created gap.
• Moving the pick towards the bottom left corner will cut through the adhesive.
• Leave the pick in place to prevent re-adhesion.

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

• Slide the new opening pick to the bottom right corner to slice the adhesive.
• Leave both opening picks in place to prevent the adhesive from resealing.

If the adhesive is hard to cut, it may have cooled down.

• Reheat the adhesive with the iOpener for 2-3 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.
• Leave the opening pick in place at the top right corner.

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

• Insert a fourth opening pick under the top right corner.
• Slide the opening pick along the top edge to cut 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 remaining adhesive.
• When slicing near the power button, insert only ~3-4 mm of the tip to avoid damaging the power and volume button flex cable.

Remove the back cover.

Power on your phone and test all functions before reassembling.

• Make sure to power down your phone completely after testing.

• Use tweezers or fingers to remove any loose adhesive chunks.

Wipe away remaining adhesive residue with high concentration (over 90%) isopropyl alcohol.

• If using custom-cut adhesives, follow the provided guide.

• If using double-sided tape, follow the provided guide.

Locate the NFC antenna and charging coil assembly on the bottom left side.

• Insert an opening pick under the left bottom end.
• Slide the opening pick along the battery's bottom left edge to separate it from the assembly.

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

• Carefully slide the opening pick along the bottom to separate the assembly from the loudspeaker.

Use a spudger to carefully pry the charging coil connector straight up from its socket.

Use a spudger to disconnect the NFC antenna by gently prying the connector straight up from its socket.

• Remove the NFC antenna and charging coil assembly using a Phillips screwdriver.
• The assembly is secured with five 3.9 mm-long screws.

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

Remove the battery cable by prying the connector straight up with a spudger.

Disconnect the Laser AF Module Cable by prying its connector straight up with a Spudger.

Apply an iOpener to the screen area around the front-facing camera for 2 minutes to loosen adhesive.

Use caution when applying external heat (hair dryer, heat gun, or hot plate) as phone's display and battery are prone to heat damage.

• Insert an opening pick under the laser AF module and slide it towards the earpiece speaker assembly.
• Pry up the laser AF module using your opening pick.

• Remove the laser AF module using a pair of blunt tweezers.

• Always wear protective gloves when handling chemicals.

  Apply new adhesive where necessary during reassembly, after cleaning relevant areas with isopropyl alcohol (at least 90%).