This guide shows how to remove and replace the glass back cover for the Mate 10.
The back cover held in place with a very strong perimeter adhesive. During removal, the adhesive may rip out parts of the coating from the glass back cover, leaving behind patches of clear glass.
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.
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.
Before you install a replacement back cover, be sure to remove all traces of perimeter adhesive from the phone frame.
If you are re-using the back cover, carefully remove all traces of adhesive from the back cover.
The glass back cover is fragile and prone to cracking. Do not apply uneven pressure to the back cover as you clean.
You may pull up chunks of the cover's color coating as you remove the adhesive. To reduce the chances of this occurring, apply heat or high concentration isopropyl alcohol to the adhesive to weaken it.