When the flagship Xiaomi Mi or budget Redmi falls into the water, it causes instant shock and panic.Water is a powerful solvent and conductor that, when hit on the motherboard, causes a short circuit, instantly disabling the device.The reaction rate in the first minutes after “bathing” the gadget directly affects the likelihood of its successful recovery at home or in the service center.
Modern smartphones often have moisture protection, but it's designed for fresh water and limited immersion time. Salt sea water, chlorinated pool water or sink soap have aggressive chemical properties that destroy the protective coatings of chips, which is why the algorithm of how to act when you get into the water depends not only on the model of the phone, but also on the type of fluid with which you came into contact.
In this guide, we will take a look at the physical and chemical processes that take place inside the enclosure and offer a clear plan of action: you will learn why the popular myths about drying rice can do more harm than water itself, and what tools will be needed to minimize damage.
Initial response and immediate action
The first seconds after removing the device from the water are critical. Many users instinctively try to check whether the screen is working or whether the sensor is responding, which is a gross mistake. Turning on the phone or even trying to unlock it with a button puts stress on contacts where moisture is already present, causing electrolysis and instantaneous burnout of the power controllers. Electric current combined with water turns the board into an electrolyser that destroys the slim walkways.
⚠️ Warning: It is strictly forbidden to connect a wet smartphone to a charger! Powering a wet battery can cause it to swell, overheat or even ignite.
If you have a removable battery in your phone, you need to remove it immediately, but most of the current Xiaomi and Poco models have non-removable batteries, which makes it difficult, so you need to turn off the device as quickly as possible, holding the power button, and if the screen is out, but the phone vibrates or makes sounds, this is a signal that the power chain is still active, and the risk of short circuit is maintained.
After switching off, clean the case carefully with a soft absorbent cloth or paper towel. Pay special attention to the connectors: USB Type-C charging port, speaker and microphone holes. Don't shake the phone sharply, trying to "knock out" the water, as this can disperse moisture deeper into the case, where it will reach critical areas under the screen.
☑️ Emergency actions in contact with water
Dismantling and removal of components
After the initial treatment of the enclosure, it is necessary to ensure that air is accessed to the internal components or completely removed for professional cleaning. SIM-This will open an additional channel for moisture to escape and will save your photos and contacts if the memory card has not been damaged.
If you have minimal repair skills and you have the tools (heating table or hair dryer, suction cups, mediators), you can try to carefully remove the back cover. Many Xiaomi models are glued to a sealant that softens when heated to 80-90 degrees. However, if you are not confident in your abilities, it is better to limit yourself to removing trays and moving to the drying stage so as not to damage the plumes.
When you remove the lid (if possible), first disconnect the battery plume from the motherboard, this is guaranteed to turn off the device and stop the chemical reactions of oxidation, it is also worth disconnecting the plumes of the display and other modules if you plan to dry for a long time. Complete de-energization is the only way to stop corrosion without using an ultrasonic bath.
Do I need to take the phone completely?
The process of proper drying of the device
There are many myths about how to dry electronics, the most common is to bury the phone in rice. Rice dust, getting inside the case through speakers and connectors, mixes with moisture and forms an adhesive mass that clogs the microphones and makes further repairs difficult. In addition, rice is not hygroscopic enough to pull water from the deep layers of the board in a reasonable time.
The most effective method of home drying is to use silica gel pellets (often found in shoe or electronics boxes in Do Not Eat bags). Place the phone in a sealed bag or container, fill it with silica gel and leave it for at least 24-48 hours. Silica gel actively absorbs moisture from the air inside the container, creating a dry environment for water to evaporate from the phone.
The alternative is to pour warm (not hot!) dry air, and you can use a fan to direct the air flow to the open connectors of the phone. 40-45 Hot air from the hair dryer can melt the glue, damage it. OLED-screen or warp plastic body elements. Xiaomi uses sensitive components that fear overheating.
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Use small silica gel bags by placing them directly in charging ports and headphones (unless they are covered with plugs) to speed up the process of pulling moisture from the deepest places.
What to do categorically can not be done
Mistakes made in the first hours after water hits are often fatal. Beyond the things I mentioned, there are a number of actions that intuitively seem right but cause irreparable harm. Understanding the physics of the process will help avoid these mistakes and preserve the chances of recovery.
- 🚫 Using a hair dryer at maximum power: The hot air stream drives water droplets deeper under chips and shielding plates, from where they are almost impossible to remove without soldering.
- 🚫 Battery or heater heating: Lithium polymer batteries used in Xiaomi are extremely sensitive to high temperatures and can swell or catch fire when heated above 60 degrees.
- 🚫 Shaking and impact: Sharp movements can cause mechanical damage to already water-weakened contacts or detachment of plumes.
- 🚫 Blowing out by mouth: Exhaled air contains a lot of moisture, which will only add water to the inside of the device, and saliva, caught on the contacts, will accelerate corrosion.
⚠️ Warning: Don't try to dry your phone in the microwave or oven! this is guaranteed to destroy the device and could cause the battery to explode.
Another common mistake is waiting for a miracle. If the phone turns on after drying, it does not mean that it is completely healthy. Corrosion is a slow process. Residues of salts and minerals continue to destroy the metal even in a dried state. So even a successfully resurrected device is recommended to show the master for preventive cleaning.
Chemical cleaning and refunding
If the water was not distilled (and 99 percent of the time it is), there are salts and mineral deposits on the board, which conduct current and cause circuits even after drying out. Removal requires chemical cleaning. At home, you can use isopropyl alcohol (at least 90 percent) and a soft brush, but this method is only effective when the device is completely disassembled.
Professional repair involves the use of an ultrasonic bath, the plate is immersed in a special solution, and ultrasonic waves knock out the dirt and oxides from under the chips, then replace the burned components. The table below shows the most vulnerable nodes of the Xiaomi smartphone when in contact with water.
| Component | Risk of damage | Symptoms of malfunction |
|---|---|---|
| Power controller | High-pitched | The phone does not turn on, warms up in the off state |
| Audio codec | Medium. | No sound, no sound, no microphone working |
| Display plume | High-pitched | Stripes on screen, touchscreen unresponsive, white screen |
| Camera module | Medium. | Black screen when starting the camera, fogging of the lens |
It's important to understand that the cost of recovery can vary, because if the processor or memory burns down, repairs often become economically inefficient, but in most cases, you can replace the power controller or clean the circuits, bringing the device back to life, and cleaning it on time increases the chances of success by up to 80 percent.
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The success of recovery depends not so much on the time spent in the water, but on the speed of de-energizing the device and subsequent professional cleaning of salts.
Prevention and protection in the future
After a successful (or unsuccessful) bathing experience, there is a desire to protect yourself in the future.Modern Xiaomi smartphones often lack a 3.5 mm headphone jack, which theoretically increases leakproofness, but does not make them waterproof. The IP67 or IP68 moisture protection rating is only relevant for new equipment and laboratory conditions.
Over time, the adhesive sealing the case will dry up, and the micro-cracks on the screen or body will become the gateway to moisture, so you shouldn't rely on the manufacturer's stated protection, and the best solution is to use high-quality protective covers with high sides and protective glasses that seal the front.
And there are special sprays for electronics that create the thinnest water-repellent film on the board, and applying this formulation immediately after you buy it (at the first opening) can save the device if water accidentally hits you, giving you precious time to react.