Disassembly/Repair of the mobile device Xiaomi POCO C75 (Xiaomi POCO C75 2410FPCC5G) with each step description and the required set of tools.

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

First, we remove the SIM card tray.

For this, we use a special tool. Insert it into the hole and push out the tray for the SIM card and memory card.

Next, we need to heat the back cover. For this, we use a heating mat, but you can also use a hair dryer.

Heat it to approximately 70°C or 160°F.

After 5–10 minutes, we move on to separating the back cover.

For this, we use a thin plastic film. This could be the protective film from a new display or a film from a stationery store.

So, we insert it into the gap between the back cover and the mid-frame and carefully slide it along the edge, cutting through the adhesive layer.

As always, we need to be careful around the camera area so we don’t accidentally damage the lenses. And of course, be careful around the buttons and the fingerprint sensor, since flex cables may be located in those areas.

Take note: on this type of cover, there is usually extra adhesive in the circular area where the cameras are located. This extra adhesive is usually applied directly around each camera. That’s why we carefully work the film as close to the cameras as possible—without touching the lenses.

After that, we can use a thicker tool. In the circular area, the cover is thicker, and adhesive is applied there too, so that’s where we try to lift and separate it.

Next, we cover the camera lenses. For this, we use a special protective film.

Note that we stick the film not on the lenses themselves, but on the rim around the cameras.

We unscrew the screws. We use a 1.5 mm Phillips screwdriver or Phillips #000.

We place the screws on a special surface in a specific order, just in case.

All the screws appear identical, but sometimes they don’t go back smoothly into the wrong holes.

Using a screwdriver Phillips 1.5 mm (PH #000), unscrew the seven screws at the bottom.

Move on to separating the mid-frame.

For this, we again start with a thin plastic film, insert it into the gap between the mid-frame and the display frame near the SIM card slot, release a few clips, and then switch to a thicker tool.

As always, be careful in the corners, since the frame is very firmly attached there.

Also, be extra careful with the display edges so you don’t crack them.

We carefully work our way around the edge, also watching out around the side buttons so we don’t damage them.

Disconnect the battery connector as soon as you can. Use a non-metallic or plastic tool to avoid any damage.

ℹ️️ The Xiaomi POCO C75 2410FPCC5G model has a battery BN5X with a capacity of 5160 mAh (also known as a rechargeable battery).

Using a non-metallic tool, disconnect the fingerprint sensor connector. Set aside the mid-frame with the antenna contact pads and fingerprint sensor.

Now we move on to the cover.

We find the correct spot where we need to gently pry it up and remove the cover with the speaker.

It’s not always easy to find the right place, and it’s not always obvious where exactly the cover separates.

Once we’ve found the right spot, we carefully lift it and set the cover with the loudspeaker aside.

Next, we disconnect the inter-board flex cable and coaxial cable.

And we move on to removing the sub-board.

Again, find the spot where the sub-board is held in place by clips. Carefully remove the sub-board.

The sub-board contains the charging port, microphone, and other components on the reverse side.

Now we move on to the mainboard. We disconnect the rear cameras and set them aside.

After that, we disconnect the front camera. The front camera is traditionally attached to the motherboard shield with a copper heat-dissipating foil.

We carefully peel off the copper foil—it will be needed again during reassembly.

Next, we cover the front camera lens, ideally, to prevent dust from getting on it.

Then we disconnect the display flex connector / inter-board flex connector, and the coaxial cable connector.

We now proceed to removing the motherboard.

We check that nothing is in the way, that no screws are left. Find the correct spot to gently pry it up and lift out the motherboard.

Note that the motherboard may also be held on the reverse side with thermal paste.

Finally, we move on to the battery.

There are two brown pull tabs: one is wide along the edges, and the other is narrow in the middle. Both tabs need to be unfolded. The narrow middle tab should be folded aside as far as possible, and the wide edge tab should be pulled upward.

So, we pull up the wide tab, and this allows us to safely remove the battery.

Under the battery, there’s a transparent protective layer that shields the inter-board flex cable.

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