Disassembly/Repair of the mobile device Huawei Nova 13i (Huawei Nova 13i CTR-L91) 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 this, we use a special tool, insert it into the hole, push the tray out, and set it aside.

After that, we need to heat the surface of the back cover to approximately 70 degrees Celsius or 160 degrees Fahrenheit. For this, we use a heating mat, but you can also use a hair dryer.

After approximately 10 minutes, we move on to separating the back cover.

To remove the back cover, we use a thin plastic film. We carefully insert it into the gap between the back cover and the mid-frame, and carefully run it along the edge, cutting through the adhesive layer.

As always, you need to be careful around the side buttons and the fingerprint sensor, but it is better not to run the tool through this area at all, since the flex cables are located very close to the cover.

They may be slightly glued down in some places, and it is very easy to damage them here. It is better to lift the cover at the end (of separating the cover) and open it without touching the flex cables in this area.

You also need to be careful around the cameras so that you do not accidentally touch or damage the lenses.

The cover is also additionally glued around the camera area, so we need to use a thicker tool.

The camera cover itself is also slightly thicker in the area where the cameras are located. We can press lightly on the cover in this area and lift it up. Don’t press on the board!

After that, it is better to cover the camera lenses. For this, we use a special film. Please note that we apply the film not to the lenses themselves, but to the rim around them.

So, after covering the lenses, we move on to removing the screws in the upper part. For this, we use a 1.5 mm Phillips screwdriver or Philips #000.

Huawei traditionally uses non-magnetic screws, and they are difficult to remove, so we also use tweezers.

Also note that there are antenna traces around the screws on the cover.

You also need to be very careful here so that you do not accidentally touch or damage them.

Now we can use a non-metallic tool to separate the cover in the upper part.

We carefully pry it up by the edge and lift it. The cover is glued down in one area, so we carefully cut through the remaining adhesive and remove the cover.

The back cover has contact pads and antenna traces on it.

Next, we use a non-metallic tool to disconnect the battery connector and move on to the lower part.

ℹ️️ The Huawei Nova 13i CTR-L91 uses a HB496493EGW rechargeable battery with a capacity of 5000 mAh.

In the lower part, we also need to remove the screws.

It looks like all the screws are the same, but it is better to keep the screws from the lower part separate from the ones we removed previously.

We also unscrewing the two screws, and removing the bracket.

We disconnect the interconnect flex cable.

Now we need to remove the speaker cover.

We need to find the correct place to carefully pry it up, lift it, and turn it over.

Disconnect the coaxial cable and also free it from the retaining clips on the sub-board.

Now we can remove the board. We carefully pry it up, lift it, and remove it.

The sub-board contains the charging port, microphone, and the sim connector on the back side.

We detach the small antenna board together with the coaxial cable.

And we disconnect the connector of the second coaxial cable.

We disconnect the first rear camera and disconnect the connector for the second rear camera.

And as we can see, at this point we cannot disconnect the large rear camera because it is glued or attached to a plate that is quite wide, and it cannot be removed at this stage.

So, we disconnect the front-facing camera.

It is also better to cover the front camera lens so that no debris or dust gets onto it.

Now we need to disconnect the connectors.

We disconnect the coaxial cable connectors and move them aside so that they do not interfere.

We disconnect the interconnect flex cable connector, disconnect the display flex cable connector, and disconnect the fingerprint sensor connector.

We also need to remove one screw that secures the motherboard.

This screw is clearly different from the previous ones.

Now nothing is preventing us from removing the motherboard.

Again, we need to find the correct place where we can carefully pry it up and remove it.

So, we carefully pry it up, lift it, and remove it. The motherboard may be held in place by thermal paste on the back side.

Now nothing is preventing us from disconnecting the large rear camera and moving it aside.

Finally, we move on to removing the battery.

As is traditional with Huawei, there are three brown tabs.

Two are located on the sides and need to be folded back, while the tab in the middle needs to be carefully pulled upward to remove the battery. In practice, the tabs tear off because the quality is very poor.

But at some point, we can remove the battery. Under the battery, there is an adhesive transparent protective layer that protects the interconnect flex cables.