How to understand the phone Xiaomi Mi A1: step-by-step instructions

The process of disassembling the Xiaomi Mi A1 smartphone (also known as the Xiaomi 5X in China) may seem intimidating to a beginner, but with the right tools and knowledge, it is quite feasible at home. This device, running on a pure Android One, has an aluminum body that simplifies heat removal, but requires accuracy when working with the display adhesives. Before you start dismantling, you need to completely turn off the power of the device to avoid short circuits on the board.

To successfully perform the procedure, you will need a minimum set of tools that can be purchased from any radio store or ordered online. Xiaomi Mi A1 does not have screws on the outside of the case, so all mounts are hidden under decorative elements and the camera module. It is important to understand that any interference with the design of the device can lead to a loss of warranty if it is still relevant.

In this article, we will take a detailed look at each step of dismantling, paying special attention to plumes and fragile components. A critical point is to turn off the battery immediately after removing the back cover, which prevents damage to the power controller if you carelessly handle other plumes. Follow the instructions carefully so that you do not damage the case or internal components of your gadget.

Tools and workplace preparation required

Good workplace preparation is key to successful disassembly without losing small screws and chip damage. You'll need a clean, well-lit surface, preferably with an antistatic mat, although for household repairs, just a clean desk is enough. The organization of space will help you not get confused in the sequence of actions and keep all the details intact.

The Xiaomi Mi A1 will require a specific set of tools to work with, as standard screwdrivers may not fit a certain size. Using the wrong tool often leads to licking of the screw hats, which makes further repairs much more difficult.

• 🔧 Precision screwdriver kit (cross-hatch) PH000, PH00 flat).
• 🔥 A dryer or warmer for softening the glue under the display.
• 🎴 Plastic blades and mediators for opening the body.
• 🧲 Magnetic mat or organizer for sorting screws.

Don't forget to also prepare a suction cup to neatly tear the display off and tweezers to work with small plumes. Safety comes first: if you use a hair dryer, watch the temperature so that the battery or plastic elements inside the case do not overheat. The optimal warming temperature is about 80-90 degrees Celsius.

Removal of the back cover and primary access

Unlike many modern smartphones, Xiaomi Mi A1 It doesn't have a glass back panel, which reduces the risk of breaking it if you don't handle it carefully, but it's got a different mounting mechanism, and you have to start disassembling it by removing the tray. SIM-This is a standard procedure that releases the internal stresses of the housing before dismantling.

Once the tray is removed, attention shifts to the main camera module, which is a key fixation element. Around the camera rim are screws hidden under a decorative ring that is often glued. Carefully tuck the ring with a needle or a thin blade, trying not to scratch the aluminum body. The camera mount screws hold not only the module itself, but also part of the internal frame.

⚠️ Warning: The camera's decorative ring is very fragile, and when it's removed, act without fanaticism, so as not to damage the plastic that will then catch your eye.

After you unscrew all the visible screws (usually 4-6 around the camera and a few around the perimeter, if there are any under the stickers), you can start removing the back cover. It is held on a double-sided tape around the perimeter. Use the suction cup to create a small gap, and insert a plastic card or a spatula. Driving the tool along the faces, gradually cutting through the adhesive layer.

Don't try to open the case with one jerk, the glue can hold tight and a sharp movement will cause cracks in the metal or damage to the fingerprint scanner plume if it is attached to the lid.In the Mi A1 model, the fingerprint scanner is on the back and connected to the board by a plume, so you need to open the lid slowly, controlling the length of the connecting cable.

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Heat the body perimeter with a hair dryer for 2-3 minutes before opening.This will soften the glue and make the process of removing the back cover significantly safer for the integrity of the frame.

Dismantling the battery and disconnecting the plumes

Once you successfully remove the back cover, you'll have access to the internal layout of the device. The first thing you need to do before you remove any additional protective plates is to find the battery connector and disconnect it from the motherboard. This is the golden rule of electronics repair, which prevents accidental circuits and combustion of components when the contacts are accidentally touched by a tool.

The battery in Xiaomi Mi A1 is glued to the inner frame on a sufficiently strong double-sided tape. To remove it, you will need to use a hairdryer again, warming the battery area through the open case (if access allows) or gently tucking it with a plastic blade. In no case do not use metal tools to tamper with the battery, as its puncture will cause ignition.

The plumes in this device are compact, and often they're covered with metal screens or pinch slats. To get to the display and touchscreen connectors, you'll have to twist out a few screws that fix these slats. The screws can vary in length, so sort them out right away, noting where the one was twisted.

• 🔋 Turn off the battery connector first.
• 📱 Remove the clamping bars from the display connectors.
• 🔌 Carefully disconnect the plumes of the main module and touch screen.
• 📸 Turn off the rear camera plume if you are planning to replace it.

When working with connectors, try not to pull the wire itself, but to pull for a special tongue-connector, if it is provided by the design. Mechanical damage to the contacts on the plume can lead to the inoperability of the screen or the lack of response to touch even after assembly. If the plume sits tight, use a plastic blade to accurately lift it.

Replacement of the display and touch screen

The screen in the Xiaomi Mi A1 is a module where the matrix and touchscreen are often soldered together, which makes it easier to replace, but increases the cost of the component. If your device has broken glass, but the image remains clear, theoretically you can only replace the glass, but it requires expensive equipment (separator) and skills. At home, it is easier and more reliable to replace the display module assembled.

To remove the old display, you need to remove all the screws that hold the frame and turn off all the plumes that go to the control board. Then the screen is carefully warmed up around the perimeter. The glue, the locking module, softens, and the screen can be removed by putting it on the edges. Act evenly from all sides, so as not to create a voltage point that will split the new matrix.

Installation of the new module is done in reverse order. Before gluing, be sure to check the health of the new screen by connecting the plumes and turning on the phone without fixing it permanently, this will avoid a situation where after a complete assembly and sticking of the new glue, a defect of the purchased spare part will be detected.

When installing a new screen, make sure that the protective film from the adhesive layer is removed immediately before pressing.The adhesive layer must be fresh and of high quality to ensure tightness and dust protection. Once installed, let the adhesive "grab" for several hours before exposing the phone to loads.

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Always check the new display before the final sticker, which will save you time to re-disassemble in case of marriage.

Working with the motherboard and camera

The motherboard in the Xiaomi Mi A1 is located at the top of the case and protected by a metal screen. Board removal is rarely required, usually only when replacing the charging connector (if it is soldered on the board, although in the Mi A1 it is often on a separate plume) or when serious repairs after water hits. The camera is also attached to the board and frame, and its replacement requires special care.

The main camera Xiaomi Mi A1 optical, with double focus, and stands for the plane of the body. When disassembling it is important not to damage the lenses and not to stain them with your fingers, as the greasy spots will then be difficult to remove without disassembling the camera module. Optical stabilization (if present in the modification) or autofocus can be damaged if a strong impact or a drop in the board.

To remove the board, you need to unscrew all the screws around the perimeter, disable the antenna connectors (they are often under the screws or snap), and carefully remove the board from the case. The antenna cables are very thin and easily break, so you can not pull them. Use tweezers to snap the connectors.

⚠️ Warning: Antenna contacts must be clean.When assembled, make sure they are tightly pinned by screws, otherwise the phone will not catch the network or Wi-Fi well.

When you reverse-mount, make sure that all the plumes are in their channels and not clamped by metal elements of the case. Insulation of the plumes is also important: if somewhere worn protective film, seal it with capton tape to avoid closure on the case.

Assembly of the device and verification of functionality

The final stage, assembly, requires the same care as disassembly. Start by installing the motherboard and connecting all the plumes, then fix the battery. Make sure all the screws are twisted but not pulled so as not to break the thread in the aluminum frame. The sequence of actions should be strictly reversed to the disassembly process.

Before you stick the back cover, test it. Check the touchscreen, vibrations, speakers, microphone and cameras. If everything works correctly, apply a new glue or double-sided tape around the perimeter of the case and press the back cover. You can use rubber bands to tighten the phone for 15-20 minutes to fit evenly.

After assembly, take your time to load the device right away. Let the glue polymerize. In the first hours of operation, watch the heating and behavior of the system. If the phone is behaving strangely, perhaps some plume is not fully inserted into the connector, in which case you will have to repeat the procedure.

• 📲 Check the responsiveness of the touchscreen in all corners of the screen.
• 🔊 Test the volume of the speaker and the work of the auditory speaker.
• 📷 Take a few photos on the front and back camera by checking the focus.
• 📶 Make sure the stability of the cellular signal and Wi-Fi.

Successful assembly brings back life to your favorite gadget. Xiaomi Mi A1 is a reliable device, and competent repair can extend its life for several years.