Disassembly Xiaomi Mi Max: detailed instructions with photos and tips

Xiaomi Mi Max is one of the company’s first phablets with a 6.44-inch screen, released in 2016. Despite its age, the device is still in demand due to its maintainability and upgradeability. However, disassembling this device has its own nuances: fragile plumes, adhesive battery and custom rear mounting. If you plan to replace the battery, screen or diagnose a malfunction, it is important to understand the sequence of actions and the potential risks.

In this article, you will find a step-by-step photo manual, a list of tools you need, and a list of common errors that cause damage to your device. We will look at both basic disassembly (removing the lid and battery) and deep dismantling before the motherboard is removed, and special attention is paid to safety techniques that will help you avoid short circuits or damage to the plumes.

Before you start, evaluate your skills: if you have never disassembled smartphones, we recommend you to train on simpler models or contact the service center. Xiaomi Mi Max is not the most difficult machine to repair, but also not the easiest: there is no modular design, like Fairphone, and many elements are glued together.

Preparation for disassembly: tools and security measures

Before you disassemble the Xiaomi Mi Max, prepare the workspace and tools.

• 🔧 Plastic mediators or shoulder blades (2-3 (a) - for separation of the back cover and the battery.
• ⚡ Screwdriver cross PH00 — for the rear panel screws and motherboard mounting.
• 🔥 Dryer or thermo-air station - for softening the glue under the battery (temperature 60-80)°C).
• 🧲 Magnetic mat or container – so as not to lose small screws and parts.
• 📏 Suction - will help to lift the lid after heating.
• 🛠️ Tweezers and antistatic bracelet – for working with small elements and protection from static electricity.

Pay special attention to battery safety. Xiaomi Mi Max lithium polymer batteries are prone to bloating and ignition when damaged. If you notice that the battery is deformed (the cover is raised, the screen is "bulging"), do not try to disassemble the device yourself - contact the service. Also avoid using metal tools to tamper with the battery: this can lead to short circuit.

⚠️ Warning: If the smartphone was in water or was subjected to severe vibration (for example, after a fall), before disassembling, be sure to check the integrity of the battery using a multimeter.

Work on a clean, well-lit surface. It's advisable to use an antistatic mat or at least a grounded metal sheet. If you're disassembling a smartphone to replace a battery, buy an original or certified battery in advance -- cheap ones often have less capacity and can damage the power controller.

Step 1: Removing the back cover

The back panel of Xiaomi Mi Max is mounted on latches and double-sided tape. To remove it, follow the following steps:

1. Turn off your smartphone and remove it. SIM-card from the tray (if it is installed).
2. Heat the edges of the cover with a hair dryer for 1-2 minutes, keeping it at a distance of 5-7 cm.°C – if overheated, plastic can deform.
3. Tap the cover with a plastic mediator, starting at the bottom edge (near the connector). USB-C). Insert the tool no deeper than 2-3 mm, so as not to damage the plumes.
4. Carefully swipe the mediator around the perimeter, separating the latches. If the lid does not respond, reheat the problem area.

At this point, many people make the mistake of trying to open the lid like a book, so you risk breaking the fingerprint scanner plume or the antenna contacts. The right way is to move the lid upwards (towards the camera) after the latch is separated, and then gently lift it. The plumes remain attached to the motherboard, so don't pull the lid abruptly.

If the lid still fails, check:

• 🔍 Are there no undetached latches in the upper part (near the camera).
• 🔥 Is the heating temperature sufficient – sometimes you need to repeat the procedure.
• 🛠️ Are you using metal tools that can scratch the body.

Step 2: Turn off the battery and plumes

When you take off the back cover, you'll see the battery, the motherboard and some plumes, and the first thing you need to do is turn off the battery to avoid short circuits.

1. Find the battery connector - it is located at the bottom of the board, next to the USB-C port.
2. Carefully put a plastic spatula on the connector and unplug it. Don't use metal tools!
3. Check that the contacts are not bent or oxidized. If there are signs of corrosion, clean them with alcohol solution.

Now you can disconnect the other plumes. Xiaomi Mi Max has three:

To detach the plumes, use tweezers or a plastic spatula. Lift the latches of the connectors perpendicular to the board, not sideways, so you avoid damaging the contacts. If the plume is "stayed," do not pull it by force: moisten the connector with isopropyl alcohol (90%+) and gently swing.

⚠️ Note: The display plume in the Xiaomi Mi Max is particularly fragile due to the delicate contacts. If you notice that after disassembly the screen began to "glue" (self-pressing, stripes), most likely, the plume is damaged. In this case, a replacement will be required, since the "sweeping" of contacts rarely gives a long-term result.

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If you are disassembling a smartphone to replace the battery, take a picture of the location of the plumes and screws before turning off, this will help to properly assemble the device back and avoid “extra” parts.

Step 3: Removing the battery

The battery in Xiaomi Mi Max is glued to the body with double-sided tape, it will take patience and caution to remove it.

1. Heat the battery with a dryer on the back (through the lid) for 3-5 minutes. Temperature - 70-80°C. It'll soften the glue.
2. Put a plastic blade on the battery from any angle.
3. Carefully pull the black thrust tape (if any) or continue to separate the battery with a spatula, putting on the perimeter.
4. If the glue is too strong, reheat the problem area. Don't put too much effort into it, it could tear the battery.

In some Mi Max versions (such as the Mi Max Prime), the battery can be further fixed with a metal frame, in which case, first unscrew the screws with a screwdriver. PH00, And then take off the battery.

After removing the battery, examine it for:

• 🔋 Bloating – if the battery is “swelled”, it cannot be reused.
• 🔥 Traces of oxidation on the contacts are a sign of overheating or short circuit.
• 📉 Capacity loss – if the original battery (4850 mAh) holds a charge of less than 2-3 hours, it is time to replace it.

⚠️ Warning: If you notice a clear or yellowish liquid under the battery when you remove the battery, it is an electrolyte. Stop working immediately, rinse the board with distilled water (not normal!) and dry it for 24 hours. Contact with the electrolyte leads to corrosion of the tracks and failure of the power controller.

Step 4: Dismantling the motherboard

If you need to get to a processor, memory or communication module, you need to remove the motherboard, which is the most difficult step, because you have to unscrew more than 15 screws and disconnect several plumes.

1. Unscrew all screws around the perimeter of the board (use a screwdriver). PH00). Mi Max screws of different lengths – remember or take pictures of their location.
2. Disconnect the plumes of the speaker, vibromotor and antenna modules (they are located at the bottom of the board).
3. Carefully raise the charge with a plastic spatula, starting at the top edge.
4. If the board gets stuck, check if there are unscrewed screws or unconnected plumes left.

After the charge is retrieved, you will be able to access:

• 📱 Qualcomm Snapdragon processor 650/652 (depending on the modification).
• 💾 Memory chips (3/4 GB of RAM and 32/64/128 GB ROM).
• 📡 Module Wi-Fi/Bluetooth (may require replacement for communication problems).
• 🔊 Audio codec – if the microphone or speaker is not working.

When working with a fee, follow the following rules:

• 🧤 Use an antistatic bracelet or touch a grounded object periodically.
• 🔍 Don’t touch contacts and chips with your bare hands – sweat and fat can cause oxidation.
• 📸 If you clean the board from dust, use a soft brush and alcohol (at least 90%).

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Xiaomi Mi Max motherboard is sensitive to static electricity. Even a discharge that is imperceptible to humans can damage a power controller or memory module. Always use antistatic protection!

Step 5: Disassemble the screen and replace the plumes

If the purpose of disassembly is to replace the display or touchscreen, you will need to remove the front panel. In Xiaomi Mi Max, the screen is glued to the frame, so the process is more complicated than in models with a modular design.

1. Heat the screen with a hair dryer around the perimeter (temperature 70-80)°Start at the bottom of the plume.
2. Put a plastic blade between the frame and the display, no more than 1-2 mm deep!
3. Carefully separate the screen as you move clockwise. If the glass is cracked, use tape to hold the shards.
4. Disconnect the display plume from the motherboard (it is fixed by a latch).

When replacing the plumes, consider:

• 📱 The display plume and the touchscreen in the Mi Max are often combined into one module, and if only the touchscreen is damaged, you can try to replace the touchscreen separately, but this requires soldering work.
• 🔧 New plumes can be of different lengths. Before buying, check the photos of the original parts.
• 💰 The cost of the original plume display — about 1500-2500 rubles. cheap analogues (up to 1000 rubles) often have poor soldering quality.

If after changing the screen, artifacts (strips, flickering) appear or part of the touchscreen does not work, check:

• 🔌 Is the slug properly connected (the latch should click).
• 🔍 Is there any damage to the contact board or plume.
• 📱 Is the new screen compatible with your Mi Max modification (e.g. Mi Max and Mi Max Prime plumes may differ).

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling Xiaomi Mi Max, and here are the most common ones and ways to prevent them:

Another common problem is that antenna contacts are damaged when the back cover is not removed carefully, and if you lose your network or Wi-Fi signal after assembly, check:

• 📡 Integrity of antenna plumes (they are located on the sides of the board).
• 🔌 Are antenna connectors connected to the motherboard.
• 🛠️ Is there any clenching on the metal frame, which serves as an antenna.

If you accidentally tore a plume or damaged the board, don't panic. Many Xiaomi Mi Max details can be found on AliExpress or in specialty stores (like Fixez or RepairUniverse).

• 🔋 Replacement of the battery – 1500-2500 rubles.
• 📱 Replacement of the screen – 4000-7000 rubles (depending on the originality of the details).
• 🔧 Replacement of the charging plume - 1000-1500 rubles.

FAQ: Frequent questions about the dismantling of Xiaomi Mi Max