Step 1: Removing the back cover

• Use a hair dryer to heat the bottom edge of the phone.

• A heat gun, heat pad, or hot plate may also be used, but be careful not to overheat the phone.

• While you wait, note the location of the adhesive (highlighted in red) holding the back cover in place.

Step 2: Slicing the adhesive

• Place a suction cup near the bottom edge of the back cover, on the right side (opposite the speaker grille) of the USB-C charging port, above the microphone hole.
• If your back cover is badly cracked, covering it with a layer of clear packing tape may allow the suction cup to adhere. If all else fails, you can superglue the suction cup to the back cover.
• Pull on the suction cup with strong, steady force to create a gap.
• Due to the adhesive's strength, this is very difficult and may take multiple attempts. If you can't create a gap, re-apply heat and try again.
• Insert the point of an opening pick or credit/debit card into the gap.

Step 3: Work your way around

• Slide the pick along the bottom edge and around the bottom-left corner, slicing through the adhesive.

• If the adhesive feels tacky and difficult to slice, re-apply heat to the edge and try again.

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

• The adhesive is very thick in some areas. Sustained exposure to heat will help weaken the stubborn adhesive. Take your time, and apply heat liberally, carefully.

Step 4: Pulling off the back

• After you cut through the adhesive around the entire perimeter of the back cover, begin to lift it away from the phone.

• Use an opening pick 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 sealing it up. Be sure to power your phone back down completely before you continue working.

Step 5: Remove Plastic Bracket

• The next two steps show how to remove the heat dissipation layer, along with its plastic bracket.

• Remove the eight 3.4 mm long Phillips screws securing the plastic bracket.

• One screw lies beneath a white sticker. Remove the sticker.

• Insert the point of a spudger underneath the right edge of the plastic bracket and pry up slightly to loosen the shield.

• Grasp the the lower edge of the plastic bracket with your fingers and lift the edge up slightly.

• Pull the plastic bracket away from the top edge of the phone.

• Slowly peel the black heat dissipation layer away from the phone. It is held in place with small patches of adhesive.

• Remove the plastic bracket along with the heat dissipation layer.

Step 6: Disconnect the battery

• Use the point of a spudger to pry up and disconnect the battery connector from its motherboard socket.

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

Step 7: Disconnect the interconnect cable

• Use the point of a spudger to pry up and disconnect the wide interconnect flex cable from its motherboard socket.

• To re-attach press connectors like this one, carefully align and press down on one side until it clicks into place, then repeat on the other side. Do not press down on the middle. If the connector is misaligned, the pins can bend.

Step 8: Disconnect the fingerprint extension cable

• Use the point of a spudger to pry up and disconnect the fingerprint extension cable from its motherboard socket.

Step 9: Disconnect the button connector

• Use the point of a spudger to pry up and disconnect the button connector from its motherboard socket.

Step 10: Heat the battery adhesive

• The battery is held in place by a strong adhesive. It is marked in red in the following picture.

• Apply heat to the right side of the battery.

• Slowly but firmly insert an opening pick into the right notch while gently prying it every few seconds.

• Work slowly to loosen the battery while not overheating the phone components.

Step 11: Removing the battery

• Work your way around the top, and all the way around until battery comes free. Use a credit/debit card to help pry if needed.

• Then, heat the adhesive again to prep it for the new Asesino aftermarket Huawei Mate 10 battery, and work backwards to completion.

• Note: You will need to heat the adhesive around the edges of the phone when replacing the back cover to ensure that it seals.