When your Xiaomi falls to a hard surface and stops giving signs of life, it causes panic in any owner: the screen can remain black, the device can vibrate without an image or hang indefinitely on the logo.Mechanical impact often leads to the withdrawal of internal contacts, damage to the display module or, in the worst case, microcracks on the motherboard.
Before you bring the gadget to the service center, you need to perform a series of self-manipulations that will help diagnose the scale of the problem. In some cases, the device can be resuscitated without deep intervention. It is important to understand that mechanical damage rarely disappears without a trace, and ignoring the symptoms can lead to a complete failure of the device.
In this article, we will examine the algorithm of actions when a smartphone falls, consider typical malfunctions and how to fix them, learn how to distinguish a software failure from the physical destruction of components, and when self-repair is already powerless.
Primary visual and tactile diagnosis
The first thing to do if a Redmi or POCO falls and doesn't turn on is a thorough external inspection. Often cracks on the case or glass are visible to the naked eye, but microscopic chips can lurk in corners or near connectors. Carefully examine the ends of the device in good light.
Put your fingers across the screen and back, do you feel the steps, bumps or sharp edges? If the body is deformed, there's a high probability that the battery has been damaged or the internal pressure has changed. Also check the power button: it should have a clear, elastic stroke.
⚠️ Warning: If you notice that the body of the smartphone is swollen or a strange chemical smell is coming from the device, immediately stop any attempts to charge.
Try to press carefully (without fanaticism) on different areas of the back cover and screen. If the screen lights up or there is a vibration, then the problem lies in the departed plume of the display or battery connector. However, if you can hear the crunch or feel the movement of parts inside, the integrity of the internal structure is broken.
Forced reset and charging response
After the impact, the software may freeze in a false death state, the system may have a critical error and stopped responding to commands, in which case the standard press of the power button may not work, you must perform Hard Reset with a keyboard combination.
Press the volume button and the power button at the same time. Hold them for 15-20 seconds. If the device is working, it should vibrate or show the Mi logo. If there is no reaction, try connecting the smartphone to the original charger.
Pay attention to the charge indicator (if any) or notification LED. A flashing orange or red light often indicates a deep battery discharge or a problem with the power controller. Connecting to a computer can also give clues: the connection sound USB-A black screen device indicates that the phone’s brains are alive and the problem is the display.
Typical fallout consequences for Xiaomi
Xiaomi smartphones, despite their popularity, have their own design features; falling often leads to a certain set of malfunctions; understanding the physics of the process helps predict which node has failed.
- 🔌 The plume waste: the most common cause. Display connectors, touchscreen or battery connectors can just pop out of their nests on the board.
- 💥 Microcracks board: the impact can cause the current conductive tracks to rupture inside the multilayer motherboard, which is all diagnosed at home.
- 🔋 Battery damage: The battery could have suffered an internal break or short circuit, causing the controller to block the power supply.
- 📱 Display module defect: The matrix could crack inside, even if the outer glass was whole, blocking the image.
Particular attention should be paid to models with glass back covers. When hit, the glass often flies apart, and the fragments can damage internal components or wireless charging. In devices with a plastic case, the impact energy is more often transferred to the corners of the board, where the most important chips are located.
Why does the phone warm up when you try to turn on?
If after a fall, the smartphone starts to heat up quickly and strongly in a certain area when connected to charging, this is a sure sign of short circuit. The current follows the path of least resistance, bypassing the normal circuit. In this case, you can not continue charging categorically - this will kill the motherboard.> Table of symptoms and probable causes. For a more accurate diagnosis, compare the behavior of your device with the data in the table. This will help narrow the search for a malfunction and understand whether it is worth trying to repair the phone yourself. Symptoms Probable cause Repair difficulty Black screen, there is sound/vibration Display plume break or matrix damage Average Indicator flashes, phone does not turn on Deep discharge or oxidation of battery contacts Low Hang on logo Mi/Redmi Damage to system files or memory (eMMC) High total no response to buttons The break of the button plume or the death of the power controller High If your case corresponds to a string with "High" complexity, it is better not to risk. Interfering with the power controller or memory requires a soldering station, a microscope and professional skills. BGA-If the warranty period has expired and the skills allow, you can try to open the case. Remember, opening the case can damage the waterproofing plugs if there were any. First thing you do is disconnect the battery. Even if the phone doesn't turn on, the current in the circuit can stay. Find the battery connector on the board and gently snap it off with a plastic blade. Then check all the visible plumes: the display, the cameras, the buttons. They need to be disconnected and relatched. Check the fee for obvious damage. Look for chips on the components, torn elements or traces of burns. Sometimes you can turn on the phone after a clean recovery. For most Xiaomi, it’s a combination of power and volume buttons (+). In the Recovery menu, select Wipe Data. This action will reset the settings to factory. If the phone turns on normally after that, you're lucky, and the damage was software-based. If not, the hardware problem is not. ⚠️ Note: Recovery will delete all your photos, contacts and apps. Use this method only if the data is not critical or already stored in the cloud. If the phone enters this mode and shows a hare repairing an android, the processor and memory are alive, and that's a good sign to continue restoring firmware through the computer. If after soldering the plumes and resetting the settings, the Xiaomi phone still does not turn on, it requires diagnostics at the component level. Often, after falls, the processor or memory chip falls off due to a violation of soldering under them (the “dump problem”), this is treated only by rebolling (solder replacement) or replacing the chip, which is possible only in a specialized laboratory. 💡Keep your check and your smartphone box. For some service centers, having original packaging speeds up the process of finding parts or getting a warranty. Don't delay your call to the specialists if you see signs of oxidation (green plaque) inside the case. Moisture from the air quickly penetrates through microcracks, causing corrosion of contacts. The sooner you start cleaning with ultrasound, the better the chance to save the board. 💡Self-repair is only justified when the plumes are gone. Damage to the motherboard requires professional equipment and microscopic brazing skills. Frequently asked questions (FAQ) Can you recover data if Xiaomi's phone doesn't turn on after a fall? If the motherboard is intact but the screen isn't working, the data can be saved by connecting the phone to a computer or using the phone to make a phone call? OTG-If you have a memory or a power controller that's damaged, it's only possible to recover data in the lab, and it's expensive. How long can the phone leave after a hit? Microcracks in the board can grow over time. The phone can last a week and then die suddenly. So you don't have to rely on what goes away, you better get it right away. Will freezing your phone in the fridge help? No, it's a myth. The condensation that's formed inside the body when the temperature drops will kill the electronics faster than the impact itself. Never put the electronics in the refrigerator. Why does the phone turn on after the fall, but the sensor doesn't work? Most likely, the plume of the touchscreen (digitizer) or the sensor layer in the display module is damaged, in which case you need to replace the display module at the assembly.