Panic is the first thing that affects the smartphone owner when the device with a characteristic splash plunges into the water. Whether it is a fall in the bathroom, toilet or just a puddle, the reaction should be instantaneous but cold-blooded. Xiaomi, Redmi and POCO smartphones often have protection against dust and moisture according to IP53 or IP68 standards, but no manufacturer gives a guarantee in case of liquid entering the case.
Water is a great conductor of electricity, and short circuits are the main cause of electronic death. If you drop your phone in water, it counts for seconds, because corrosion begins almost immediately after the board comes into contact with the liquid. Even if the device continues to work, oxidation of the contacts can kill it in a few days or weeks.
In this article, we'll look at a detailed algorithm that will help save your gadget, look at physical and chemical drying techniques, and explain why popular myths like "rice" can do more than help. The most critical rule is that the faster you turn off the device, the better the chances of fully restoring its functionality. Don't ignore the symptoms of moisture even if the screen is still glowing.
Primary actions: de-energization and extraction
The first thing you need to do right after you take your smartphone out of the water is to force it to turn it off. Don't try to check if the screen is working or if the touchscreen is responding. Any attempt to activate the display or press the volume button can be fatal, as the current will trigger irreversible chemical reactions on the motherboard.
If you have a removable battery installed in your device, which is true for some older Xiaomi models, it needs to be removed immediately.In modern models with an integrated battery, just hold the power button until the screen is completely extinguished. SIM-cards and memory cards, if used.
☑️ Emergency checklist
Be sure to remove the protective case. Under it, moisture can accumulate, which will slowly evaporate into the body, maintaining high humidity. Carefully wipe the case with a soft, fuzzy cloth, removing droplets from connectors and speakers, but do not shake the device sharply so as not to drive the water deeper.
What is absolutely impossible to do
There are many misconceptions about how to dry electronics, and the most common mistake is using a hair dryer. Hot air can melt the glue connecting the screen to the frame and damage the delicate plumes, and airflow can drive water droplets into hard-to-reach circuit board locations.
⚠️ Warning: Never connect a wet smartphone to a charger! applying voltage to a wet board is guaranteed to short circuit and fail the power controller.
Another myth is that the batteries are drying in a heating battery or in direct sunlight. The lithium polymer batteries in Redmi and POCO are extremely sensitive to overheating. High temperatures can cause the battery to bloat or even catch fire. Also avoid using a vacuum cleaner: the static electricity it creates can damage the chips.
- ❌ Do not use a hair dryer, microwave or oven to dry.
- ❌ Don’t shake your phone intensely trying to “knock out” water.
- ❌ Do not try to turn on the device to check whether or not it is alive».
- ❌ Do not connect your smartphone to your computer or charge until a full diagnosis is complete.
Proper drying: rice or silica gel?
The popular advice to put in rice is controversial: rice flour and starch dust can get inside connectors and speakers, creating a sticky mass when in contact with moisture residues; it is much more effective to use silica gel bags, which are often put into new shoes or bags.
For good moisture adsorption, put your phone in a sealed bag or container with lots of silica gel. If you don't have enough bags, you can buy silica gel filler for cat toilets. 24-48 chronologically.
Why is rice inefficient?
It is important to keep air circulating around the device, but without the drafts carrying dust, so you can gently dip the visible holes with a napkin, but not picking inside with toothpicks or cotton swabs, as the villi can get stuck on the contacts.
Disassembly and cleaning with alcohol
If you have repair skills and are confident in your abilities, you can try to gently open the back cover. Xiaomi models with a glass rear panel will require preheating the perimeter of the case to 80-90 degrees using a thermophen or a special heating pad.
The main cleaning agent is isopropyl alcohol (isopropanol) 90% strong and above, it displaces water perfectly and evaporates quickly without leaving traces. Use a soft brush to carefully clean visible areas of the board from moisture and contaminants.
⚠️ Warning: The use of ethyl alcohol or vodka is unacceptable! They contain water and additives that will only increase corrosion and leave a conductive plaque.
After treatment with alcohol, the device should dry for a few more hours, and if you see a white or greenish coating on the contacts, this is already corrosion that has already begun, and you need to remove a special ultrasound bath in the service center.
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Use only 99% isopropyl alcohol to clean electronics, it does not conduct current in a liquid state and perfectly removes oxides.
Post-drying diagnosis
After two days, you can try to turn on the device. If the phone responds to the power button, the Mi or Redmi logo appears, that's a good sign. But success in turning on does not guarantee complete serviceability. Check the touchscreen, speakers, microphone and cameras.
Pay special attention to the proximity sensor and the fingerprint scanner, and often the moisture gets into the plumes of these modules, causing them to work incorrectly, and also check whether the camera fogs from the inside when the device is heated.
| Symptoms. | Possible cause | Action. |
|---|---|---|
| Black screen, but vibrating | Damage to the display plume or controller | Replacement of the display module |
| He doesn't see. SIM-map | Oxidation of reader contacts | Cleaning or Replacing the SIM Connector |
| It's discharged fast. | Short circuit in the food chain | Diagnosis of the motherboard |
| Continuous reset | Damage to processor or memory | Complicated repairs at the SCC |
If you notice any abnormalities, it's best not to delay your visit to the service. Water continues to destroy metal even if the device is still functioning. Corrosion is a slow-acting poison for electronics.
When a service center is needed
Self-repair is only justified if a small amount of clean water and a quick response is hit. If the phone fell into salt water (sea), sweet liquid (soda, juice) or dirt, a visit to the service is a must.
Salt and sugar are powerful catalysts for corrosion. Even after thorough home washing with alcohol, there is a high risk that microscopic crystals will remain under the chips and continue to corrode the tracks.
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Self-cleaning only helps with surface contact with clean water. Deep diving requires professional ultrasonic board washing.
They can also diagnose with a multimeter and thermal imaging device, revealing hidden short circuits that are not visible to the eye, which will save data and avoid buying a new device.
Prevention and protection in the future
After a successful phone rescue, it’s worth considering additional protection, with the accessories market offering watertight bags and waterproof cases that allow you to use your smartphone in any environment.
Regularly check the condition of rubber seals around the tray SIM-Over time, these devices wear out and lose their properties, no longer protecting Xiaomi's interiors from moisture and dust.
- 🛡️ Use protective covers with high sides.
- 💧 Avoid using your phone in the bathroom.
- 🔍 Regularly inspect the body for chips and cracks.
- 📱 Consider the possibility of insuring your device against accidental damage.
Remember that the manufacturer's warranty rarely covers cases of liquid ingress, since inside the case there are often moisture indicators (LCI), which change color when in contact with water.