Xiaomi Mi 9 Battery Replacement - Xiaomi Mi 9

Step 1 | Rear Glass

Switch off your phone.

Apply a iOpener to the rear glass and heat it until it's warm and pliable.
Leave the iOpener in place for at least two minutes to loosen the adhesive.

Step 2

Secure a suction handle to the lower edge of the rear glass.

If the phone's rear glass is cracked, use strong tape or superglue to ensure it sticks.
Lift the rear glass with the suction handle, creating a gap between the glass and frame.

Insert an opening pick into the gap.

If trouble persists, apply more heat according to iOpener instructions to avoid overheating.

Slide the opening pick to the bottom right corner of the phone.

Step 3

Slide another opening pick to the bottom left corner, cutting through the adhesive.

Leave the opening picks in place to prevent re-adhesion.

Step 4

Insert a third opening pick at the bottom left corner.

Slide the pick along the side of the device, cutting the adhesive.

Be careful around the rear cameras and only insert the tip of the opening pick.

If necessary, use your iOpener to reheat the adhesive as it cools and becomes harder to cut.
Leave the opening pick in the top left corner to prevent the adhesive from resealing.

Step 5

Insert opening pick at top left rear glass corner.

Slide pick along top to break adhesive bond.
Leave one end of pick in top right corner for re-adhesion prevention.

Step 6

Insert a fifth opening pick into the top right corner of the phone.

Guide the opening pick along the right edge, carefully cutting the remaining adhesive.

Step 7

Take care not to damage the rear glass during removal.

Lift out the rear glass.
Remove any remaining adhesive from the phone with a lint-free cloth and isopropyl alcohol.
Thoroughly clean the glued areas.

Step 8 | Motherboard Cover with Charging Coil

Tamper-proof stickers may be present on some screws.

Remove the 10 Phillips #00 screws, 3 mm length.

Step 9

Insert opening pick at top right corner of motherboard cover.

Pry upwards, using a slight twisting motion with the opening pick.
Lift the motherboard cover slightly to separate it from the main board.

Step 10

Remove the motherboard cover, including the charging coil and NFC antenna.

Step 11 | Battery Disconnect

Disconnect the battery flex cable using a spudger.

Step 12 | Loudspeaker Unit

Remove the seven Phillips #00 screws securing the loudspeaker unit.

Four silver screws, 3.2 mm in length.
Two yellowish screws, 3.8 mm in length.
One black screw, 2.8 mm in length.

Some screws may be hidden beneath tamper-proof stickers.

Step 13

Insert an opening pick on the right side of the loudspeaker unit.
Twist the opening pick sideways to gently pry up the loudspeaker unit.

Be careful not to damage any cables still attached, such as the antenna cable.

Step 14

Disconnect any remaining antenna cables from the rear of the unit.

Lift the loudspeaker unit carefully and swing it open to the left, using the hinge mechanism.

Step 15

Careful when handling the antenna cable — risk of damage.

Use tweezers to disconnect and remove the antenna cable.
Remove the loudspeaker unit.

Before reassembly, inspect your old loudspeaker for components like the antenna flex cable with coax connector that may need to be transferred.

Step 16 | Battery

Remove the black ends from the adhesive tabs using a pair of tweezers.

Step 17

The adhesive tab underneath the battery can rip easily, so handle with care.

Pull out the left adhesive tab from underneath the battery using a pair of tweezers, slowly and steadily in a flat angle.
To prevent ripping, twist the strip around the tweezers for better grip.
If the tab rips and won't budge, use isopropyl alcohol or an iOpener to loosen the adhesive. Then, apply a prying tool such as an opening pick or plastic card to carefully pry out the battery.

Step 18

Hold the tweezers and carefully grasp the right adhesive tab.

Pull the tab away from the battery using the tweezers.

Step 19

Insert an opening pick into the recess and gently pry the battery loose.

Grip the pick firmly once it has penetrated the gap between the battery and the frame.

Step 20

Reusing a deformed or bent battery can cause serious injury — replace it immediately.

Remove the battery.
Dispose of the old battery and install a new one.
Remove any remaining adhesive from the midframe.
Clean the glued areas with isopropyl alcohol using a lint-free cloth before reapplying new adhesive.