Disassembling the Xiaomi Mi A3 (also known as the Mi CC3e in some markets) is a process that requires not only technical skill but also the right approach to tools. Unlike many modern models, where the rear panel is made of glass and glued around the perimeter, the Mi A3 uses a more maintainable design with a plastic cover that is held on screws and latches. This greatly simplifies access to internal components such as the battery, charging connector or motherboard.
However, despite its apparent simplicity, careless handling of the body can lead to breakage of plastic mounts or damage to plumes. Before starting work, it is extremely important to understand that the main screw hidden under the Mi logo is a critical element of the design, and ignoring it will make further disassembly impossible without the use of brute force. In this article, we will look at each step of dismantling the rear panel in detail so that you can safely carry out the replacement of components.
Preparing the workplace is the first and one of the most important steps that beginners often forget about. You will need a clean, well-lit surface, preferably with an antistatic coating, to eliminate the risk of static discharge that can disable electronics, and you will also need to prepare a set of precision screwdrivers, a mediator or plastic card to snap latches and, if necessary, a dryer to soften the adhesive, although in the case of the Mi A3 it may not be necessary.
A high-quality disassembly of a smartphone is impossible without specialized tools. Using kitchen knives or stationery often leads to scratches on the frame and damage to the internal plumes. To work with the Xiaomi Mi A3, you will need a minimal but professional kit that will ensure the safety of the device.
The main tool will be a set of screwdrivers with different nozzles, because the design uses different types of screws, special attention should be paid to the small cross screws, which are often found in mobile technology, and also do not do without a suction cup, which will help to gently lift the lid without deforming it.
- 🛠️ A set of precision screwdrivers (mandatory presence of cross-shaped) PH000 and PH00).
- 🃏 Plastic mediator or old bank card for opening latches.
- 🧲 Magnetic mat or organizer for sorting screws by disassembly stages.
- 💨 Pear to remove dust or canister with compressed air for cleaning internal cavities.
- 🔦 Powerful light source or magnifier for inspection of small parts and plumes.
⚠️ Warning: Never use metal blades to lid around the perimeter.The metal can damage antenna lines that are often applied to the inside of a plastic panel, or worse, damage the battery by causing it to ignite.
The organization of the workspace also plays a key role: arrange the tools in the order of their use, so that you do not look for the right screwdriver at the most critical time. Make sure that the room is light enough, as some screws may not be visible against the dark background of the case.
Initial inspection and disabling of the device
Before you start to physically affect the body, you need to perform a number of program and preparatory actions. The first thing to completely turn off the smartphone. Working with electronics under voltage, even with the battery turned off (if it is not removed), carries the risk of short circuit.
After turning off the device, remove the tray for SIM-This is a mandatory procedure, as trying to remove the lid with the tray installed can cause it to break or damage the contact group inside the phone.
Carefully inspect the perimeter of the device for visible damage or traces of previous autopsies.If the phone has traces of glue or sealant from previous repairs, you may need more careful exposure or use of special solvents, although this is rare for the Mi A3. Make sure there are no cracks on the back cover that can complicate the removal process.
Some users recommend discharging the battery to 25% or lower before disassembly, a safety measure: if an accidental battery damage occurs, the risk of ignition or bloating is much lower when the battery is low. Although the probability of an incident is small, electrical safety rules should not be ignored.
Dismantling of screws and concealed fasteners
The process of removing the lid of the Xiaomi Mi A3 begins with removing all visible screws. Unlike models with a glass back panel, here the fasteners are located around the perimeter and often hidden by decorative elements.
The first step is to unscrew the two screws located on the sides of the USB Type-C connector. They can be hidden under rubber plugs or simply be visible in good lighting. Use a screwdriver of the appropriate size to avoid ripping off the screw caps. The movements should be smooth, without undue pressure.
The most important and often overlooked step is the screw under the logo. On the back of the Mi A3, the "Mi" logo is often not just a sticker, but a stub that hides the central fastener. Carefully tuck the logo with a thin blade or needle. Underneath it, you find a screw that needs to be unscrewed. Ignoring this step will cause the lid to stay on, and if you push hard, you can break the plastic guides.
| Location of the screw | Type of screw | Tool. | Note |
|---|
| Bottom of the hull (left) | Little cross-eyed | PH000 | Next to the speaker |
| Bottom of the hull (right) | Little cross-eyed | PH000 | Near the microphone. |
| Under the Mi logo | Cross-middle | PH00 | Critical for withdrawal |
| Inside the perimeter (optional) | Cross | PH00 | It is found in some audits. |
Once all screws are removed, check the perimeter again, swipe your finger or tool around the junction of the lid and frame to make sure there are no hidden fasteners. If all screws are twisted, the lid should slightly luft, but not yet removed due to internal latches.
What if the screw under the logo does not turn?
If the screw under the logo "staggered" or has torn edges, do not use excessive force. You can drip a minimum amount of alcohol or special solvent on the screw and wait 5-10 minutes. Also help to use a rubber nozzle on the screwdriver for better grip.> Clicking the latches around the perimeter of the case The main work of holding the lid on the Xiaomi Mi A3 is plastic latches located around the perimeter of the device. They provide tight fitting of the panels and dust protection. The process of their cracking requires patience and use of the media (clip along the plane, the s, which would not be correct to break the supperture, and use of the media angle.) Move slowly, clicking through one segment. Pay special attention to the areas around the volume and on buttons. There the latches can be tight. Don't try to unclose the body with your hands until you pass around the perimeter. A characteristic click will signal the successful release of the next section. 👆 Insert the mediator at an angle of 45 degrees to the surface of the cover. 🔄 Move the instrument smoothly, without jerking, listening to clicks. 🚫 Do not use metal objects to avoid damaging antennas. 👀 Watch the fingerprint scanner plume if it is connected to the lid (in Mi). A3 It's usually on the payroll, but be careful). ⚠️ Warning: If you feel strong resistance at a point, don't push harder. You probably missed the screw or didn't fully snap the previous section. Go back and check the perimeter again. When all the latches around the perimeter are freed, the back cover will easily start to separate from the body. However, it is too early to celebrate victory: components that may still be connected inside, requiring careful handling. Disabling the plumes and removing the lid Once the lid is physically separated from the frame, do not try to sharply pull it up. In some versions of the Xiaomi Mi A3, an antenna plume or, in rare cases, controls can be glued to the back panel. Although in this model, the fingerprint scanner will be located under the elblock, if you need to check the wiring from the wiring and use the wiring wiring. Connectors are usually spring-loaded and require a slight upward or sideways movement. If you don't have connections, you can remove the back cover completely. Put it upwards on a soft surface with the inside side so you don't scratch. Now you have access to the battery, the motherboard, the camera module, and the speaker. This is the perfect moment to clean the inside of the dust. When you assemble it, make sure that all the plumes are tightly seated in their connectors. An insufficiently inserted connector can cause a broken microphone, dynamics, or charging problems. There are errors in the electronics, and there are errors in the place where the electronics are the error, and the price of the components. One of the most common mistakes when removing the cover Xiaomi Mi A3 — Trying to remove it immediately after you twist the lower screws, forgetting the central screw under the logo, causes the plastic to crack and the lid to deform. Another common problem is using excessive force, and if the lid doesn't come off, you've missed something. Plastic, especially in a cold room, becomes brittle. Before starting work, it is recommended to warm the case with a hair dryer at a minimum temperature (no more than a few times). 40-50 to make the plastic more elastic, although for the Mi A3 And remember, static electricity, dry air and synthetic clothing can create a charge that can be fatal to sensitive electronics. Before touching the internal components, touch the grounded metal object or use an antistatic bracelet. Error Consequence How to avoid Screwing the screw under the logo Cracking cover, break the latches Carefully inspect the logo before removing Use of metal tools Short circuit, damage to antennas Use only plastic mediators Sharp movements when snapping Broken plastic guides Act slowly, listening to the clicks Loss of screws Unable to assemble device Use magnetic mat or circuit Also worth mentioning the risk of battery damage tool. Lithium polymer batteries when puncture can instantly catch fire. Work carefully and keep a fire extinguisher or sand tank on hand in case of an emergency, although with careful disassembly the risk is minimal (FAQ) Should I warm up the back cover of Xiaomi Mi? A3 hair dryer? In most cases, for Xiaomi Mi A3 No heating is required, as the lid is held on screws and latches, not on a layer of glue around the perimeter, as in glass models. However, if the device has been repaired and was planted on glue, or if the plastic is very cold, light heating (up to the end of the day). 40-50°C) will make the material more flexible and reduce the risk of latch breakage. Can the lid be removed if the camera glass is broken? Yes, it can. Broken glass of the main camera module does not prevent the rear cover from being removed. The glass fragments may fall inside the case and damage other components or injure your fingers. It is recommended to carefully remove the large fragments and tape the camera module before work. SIM-map? It's likely that the antenna plume was squeezed during the assembly, or the contact patch for the signal was displaced. SIM-Check the connection of the antenna cable (usually a round connector near the bottom of the board) and the integrity of the contacts in the tray. A3? Original parts are best found in Xiaomi authorized service centers or with official brand partners. There are many copies on the market, which may vary in color, quality of plastic and fit accuracy. When buying, pay attention to the presence of the logo and the quality of the holes under the camera. Does the removal of the cover affect the guarantee? Yes, self-opening of the case, as a rule, will void the official manufacturer's warranty, especially if traces of interference, broken seals (if any) or damage to components are found.