How to Disconnect the Battery in the Xiaomi Redmi Note 9

Geschrieben von: Dominik Schnabelrauch

Kommentare: 0

How to Disconnect the Battery in the Xiaomi Redmi Note 9

Schwierigkeitsgrad

Moderate

Schritte

Zeitaufwand

30 - 40 Minuten

Einleitung

This is a prerequisite guide! This guide is part of another procedure and is not meant to be used alone.

Use this guide to disconnect the battery in the Xiaomi Redmi Note 9.

Werkzeuge

Ersatzteile

Precut Adhesive Card

Schritt 1

Insert a SIM card eject tool, a SIM eject bit, or a straightened paper clip into the hole on the SIM tray located at the left edge of the phone.
Press directly into the hole to eject the SIM card tray.
Remove the SIM card tray.

Schritt 2

The back cover of the Redmi Note 9 is held in place by plastic clips and adhesive. It might require some force to release the plastic clips.
Prepare an iOpener and apply it to the back cover for at least two minutes to loosen the adhesive underneath.
A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the phone—the display and internal battery are both susceptible to heat damage.

Schritt 3

Secure a suction handle to the bottom edge of the screen, as close to the edge as possible.
If the screen is cracked, the suction handle may not stick. Try lifting it with strong tape, or superglue the suction handle in place and allow it to cure so you can proceed.
Lift the phone assembly with the suction handle to create a small gap between the assembly and the back cover.
In case you have trouble creating a gap, apply more heat to further soften the adhesive. Follow the iOpener instructions to avoid overheating.
Insert an opening pick in a steep angle into the gap you created. This might require some force.
Slide the opening pick to the bottom right corner to slice the adhesive and release the plastic clips holding the back cover in place.

Schritt 4

Insert a second opening pick in a steep angle at the bottom edge of your phone.
Slide the opening pick to the bottom left corner to release the plastic clips and to slice the adhesive.
Leave the opening picks in place to prevent the adhesive from resealing.

Schritt 5

If the adhesive becomes hard to cut, it has most likely cooled down. Use your iOpener to reheat it.
Insert a third opening pick in a steep angle at the bottom left corner of your phone.
Slide the opening pick along the left edge of your phone to release the plastic clips and slice the adhesive.
Leave the opening pick in the top left corner to prevent the adhesive from resealing.

Schritt 6

Insert a fourth opening pick in a steep angle at the bottom right corner of your phone.
Slide the opening pick along the right edge of your phone to release the plastic clips and slice the adhesive.
Leave the opening pick in the top right corner to prevent the adhesive from resealing.
Do not try to separate the phone assembly from the back cover all the way yet, the fingerprint cable is still connected to the motherboard.

Schritt 7

Flip your Redmi Note 9 over.
Avoid straining the fingerprint flex cable during the following procedure.
Carefully fold the back cover to the right side of the phone assembly like you would open a book from the back.
Slide the back cover underneath the phone assembly so that the phone assembly overlaps about one third of the back cover and the fingerprint cable is not strained.

Schritt 8

Use a Phillips screwdriver to remove the eleven 3.9 mm-long screws securing the motherboard cover.

Schritt 9

Insert the tip of an opening pick underneath the bottom left edge of the motherboard cover.
Pry up the motherboard cover.

Schritt 10

Remove the motherboard cover.

Schritt 11

Use a spudger to disconnect the fingerprint cable by prying the connector straight up from its socket.
Separate the phone assembly from the back cover.