Huawei P20 Lite Display (with frame and battery) Replacement

What you need

Use a suction cup and pick to get between the battery cover and frame.
Work the pick all the way around to loosen the adhesive and remove the cover.
Flip the cover carefully to the right side of the phone, there is a cable attached to the back cover for the fingerprint ID sensor.

Release the ZIF connector to remove the Fingerprint scanner cable from the back cover.

Remove the 8 upper screws that hold the metal covers.
One of the screws may be covered with a white dot sticker. Remove the dot to access the screw.

Once the screws have been removed (as described in the previous step) the two lower metal covers can be removed.
The upper cover can be removed by prying the upper right corner free (2nd picture).

On the left side in the frame, is a small plastic retainer. Remove this and transfer to the new frame.

Disconnect the battery connector from the mainboard.
Remove the dual camera, the front camera and the two flex cables. The Wi-Fi antenna cable can also be disconnected

Using a spudger, carefully pry the mainboard up on the upper right corner to release it from the frame.

Using the iOpener or a similar tool, loosen the cover on the right side, by prying between the cover and the frame.
At the top of the cover (2nd picture) use the iOpener to pry up the cover to remove it from the frame.
Underneath the cover is the daughter board containing the charger port and headphone jack. Disconnect the cable attached to the daughter board.
Pry the daughter board to remove it from the frame, it is lightly glued, and can be reused in the new frame.
Repeat the steps in reverse to reassemble the phone.