Disassembly/Repair of the mobile device Honor 90 Lite (Honor 90 Lite CRT-NX1) with each step description and the required set of tools.

⚠️ Before disassembling, do not forget to turn your phone off.

First, we need to remove the SIM card tray.

To do that, use a SIM ejector tool. Insert it into the hole and gently push the tray out.

If it’s stuck, you can use tweezers to help pull it out.

Next, we need to heat the back cover to about 70 degrees Celsius — that’s around 160 degrees Fahrenheit.

We’re using a heating mat for this, but a heat gun or hairdryer will also work.

After 5 to 7 minutes of heating, we can move on to removing the back cover.

To separate the back cover, we use a thin plastic film. Slide it into the gap between the back cover and the midframe, then gently work your way around the edges to cut through the adhesive.

Be extra careful around the cameras and side buttons — there are flex cables and lenses that could be damaged.

Now we move on to removing the screws.

Use a 1.5mm Phillips screwdriver — that’s a Phillips hash triple-oh.

If the screws are stuck, you can use a magnetizer or tweezers to get them out.

In newer HONOR models, the screws aren’t very magnetic, so tweezers really help.

After that, we’ll remove the top cover.

Use a plastic pry tool - non-metallic, and gently lift from the right spot to release the clips.

Take your time to find the exact point that makes it easy to remove.

This top cover contains contact pads.

And we disconnect the battery. Use a non-metal tool and carefully lift the connector.

ℹ️ The Honor 90 Lite CRT-NX1 model has a battery HB416594EGW with a capacity of 4500 mAh (also known as a rechargeable battery).

Next, let’s cover the camera lenses. We use a protective film to do this.

It’s always a good idea to cover them to avoid dust or debris getting inside.

Then we move on to unscrew the nine screws at the bottom of the phone.

Again, use the same 1.5mm Phillips screwdriver.

It’s a good idea to keep these screws separate from the others.

Since they’re also not very magnetic, use tweezers to pull them out carefully.

Now let’s remove the bottom cover.

Same idea — find the right spot, gently pry it up, and lift it out.

This part holds the loudspeaker.

Next, we disconnect the connectors on the sub-board.

Carefully — unplug the interconnect flex cable and two coaxial cable connectors.

Then free the cables from the board.

There’s one screw holding the sub-board in place, remove it with the same screwdriver.

Now gently lift out the sub-board.

This board contains the charging port, microphone, and other components.

Let’s move on to the main board.

Disconnect the interconnect flex — display cable, side button cable, and the two coaxial cables.

Then unscrew one screw holding the main rear camera.

Unclip the camera mount and set that aside too.

We’ll disconnect the cameras.

Unplug the front-facing camera, flip it over, and cover the lens with protective film. Set it aside.

And we can remove all the rear cameras.

Start with the large main camera, then the two smaller ones.

If the protective film has peeled off, apply a new one and store the camera safely.

Now we’re ready to remove the motherboard. Gently pry it up from the correct spot and lift it out.

Finally, let’s disconnect the battery.

As usual with HONOR devices, there are brown pull tabs.

Be sure to read the label first — you need to know which tabs to lift, and which one to pull.

Carefully, peel back the side tabs so they don’t get in the way.

Then, according to the instructions, gently pull the center tab upward to remove the battery.

ℹ️ In the display frame remained: the earpiece speaker, vibration motor, and cables.