Xiaomi Redmi Note 7 β It's one of the most popular smartphones in the budget segment, but even it's not immune to accidental falls in the water. IP67/IP68, So fluid intake almost always leads to short circuits or corrosion of contacts, but don't panic, because if you act quickly and correctly, the chances of bringing the phone back to life are as high as the odds of it ever being. 70%.
In this article, we're going to take a step-by-step approach for the Redmi Note 7 (and other Xiaomi models without water protection), based on the experience of service centers and user tests, and we're going to look at what to do in the first seconds after an incident, what errors accelerate the death of a device, and when it's time to carry the phone for repair, and we're going to debunk 3 myths about rice drying that kill smartphones more often than water itself.
1.The first 30 seconds: what to do immediately after falling into the water
Your actions in the first half-minute will determine whether the phone survives. Water enters the Redmi Note 7 body through speakers, connectors and microphone holes, as well as through the tightness between the screen and the body. The longer the device is in the liquid, the greater the risk of corrosion and short circuit.
Do this immediately.
- π Turn off the phone (press the power button for 10 seconds if it doesn't respond - don't waste time, move on to the next step!
- π¦ Take it out of the water and shake the drops off. Don't shake the device, the liquid can penetrate deeper into the body.
- π Disconnect all cables (charging, headphones, memory cards) If your phone was on charge, first pull the plug out of the socket!
- π± Remove the cover and protective glass - moisture accumulates under them.
If the Redmi Note 7 falls into salt water, soda or soap solution, rinse it under a weak stream of running fresh water (not from the tap! use bottled water). This will remove the aggressive substances that accelerate corrosion. But don't get carried away: 5-10 seconds is enough.
β οΈ Warning: Do not press volume or power buttons after being removed from the water - this may cause a short circuit on the board!
βοΈ Emergency actions in case of water intrusion
2. disassembling the phone: what can be done on your own
If you're not afraid to lose your warranty (or it's already expired), a partial disassembly will increase your chances of survival. Inside the Redmi Note 7, there's a battery, motherboard and plumes, all of which are vulnerable to moisture, and your job is to ensure that air is as accessible as possible.
How to Disassemble Redmi Note 7:
- With a plastic shoulder blade (or mediator), gently apply the back cover, starting at the bottom corner. The lid is held on the latches - don't break them!
- Disconnect the battery plume (it's connected to the motherboard) and then apply a flat screwdriver to the black connector.
- Remove the battery. If it's glued, don't pull the wires, put it on the side.
- Check for visible moisture on the board. If there are drops, gently soak them with a lilac-free napkin (not cotton!).
Do not try to remove the screen or disconnect the camera/speakers without experience, this can damage the flexible contacts.
What happens if you don't turn off the battery?
| Action. | Risk | Recommendation |
|---|---|---|
| Complete disassembly without experience | Damage to plumes, loss of warranty | Limit yourself to removing the cover and battery |
| Using a hair dryer | Overheating of the board, detachment of elements | Only cold blowing at minimum power |
| Alcohol washing | Dissolution of glue, damage to seals | Only for experienced users (isopropyl alcohol 90%+) |
| Charging for "testing" | Short circuit, death of pay | Do not connect to the network for at least 48 hours |
3. Phone drying: myths and real methods
The most common advice is to bury your phone in rice, which is not just useless, but dangerous: rice particles can get into connectors, and starch speeds up the corrosion of contacts. Instead, use the right absorbents and controlled drying.
Effective methods of drying:
- π¬οΈ Fan at minimum speed - direct air flow into the connectors and under the cover (if removed.
- π§ Silica gel: Sickle bags of shoes. Place your phone and 10 to 15 bags in a sealed container for 48 hours.
- π¦ UV lamp -- if you have one, turn it on next to your phone for 6 to 8 hours.
- π¦ Vacuum bag - if possible, put the phone in the bag and pump out air (such as a vacuum cleaner.
The drying temperature should not exceed 30-35 Β° C. Hot air (dryer, battery, oven) deforms the plastic and can peel off the elements on the board. The best option is to leave the phone in a dry warm place (for example, on the shelf above the battery, but not on it).
β οΈ Warning: If after drying on the screen appeared divorces, artifacts or backlight flashes - this is a sign of damage to the plume of the display. In this case, self-repair is impossible: you need to replace the screen in the service.
4 When to turn on the phone after water
The minimum drying time is 48 hours, but even after that, you need to be careful to turn on the Redmi Note 7.
- Check the moisture indicator (if any). In the Redmi Note 7, it is located under the tray for the SIM-White/blue - no moisture, red/pink - moisture present.
If the phone doesn't turn on at all, try plugging it into a PC. If the computer makes the device connect sound, the board is alive, but the display or the plume may be damaged. If there's no reaction, it's probably a short circuit on the board.
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Even if the phone is on and working normally, you may experience delayed problems within a week: contact corrosion, failure of the microphone or speakers. Watch the device and at the first sign of a malfunction, contact the service.
5. Typical malfunctions after water and their signs
Not only does the water leave visible traces, but even if the Redmi Note 7 is turned on, problems can occur within a few days.
| Symptoms. | Probable cause | Can I correct myself? |
|---|---|---|
| The phone is on, but the screen is not working. | Display plume or contacts on the board are damaged | No (steam replacement needed) |
| One of the cameras is not working. | Corrosion of contacts of the camera module | Sometimes (alcohol cleaning) |
| The phone is warming and discharged quickly | Short circuit on board, damaged battery | No (diagnostics in the service) |
| The microphone or speaker is not working. | Oxidation of contacts or damage to the membrane | Sometimes (drying + cleaning) |
| Accidental reboots | Damage to memory or processor chips | No (requires ration) |
If the sensors (gyroscope, accelerometer, proximity sensor) are no longer working after water hits, the contacts on the board are likely to oxidize, in which case only an ultrasonic bath in the service center will help - it removes oxides without damaging the elements.
What to do if the phone is turned on, but:
- π It's discharged fast. β Most likely, the battery is damaged. Replace it (cost for the Redmi Note 7 is about 1000-1500 rubles).
- πΆ Not catching the net. β Check it out. SIM-If the phone is in trouble, the communication module is defective. ~2000β3000 rubles).
- π Distorted sound in dynamics β Probably the membrane of the dynamics has deformed. Try drying with a dryer in cold air (~800-1200 rubles).
6. when itβs time to get into service (and how much it will cost)
If after all the manipulations Redmi Note 7 is not showing signs of life or malfunctioning, it is time to contact professionals.
- π The phone does not respond to charging and does not turn on.
- π₯ When connected to the charger, you smell of burning.
- π΅ The screen flickers or shows artifacts (colored stripes, broken pixels).
- π The battery is swelling (this can be seen if you remove the back cover).
The cost of repair depends on the nature of the damage:
- π§ Cleaning of corrosion charges β 1500β3,000 rubles.
- π Replacement of the battery β 1000-1500 rubles.
- π± Replacement of the display plume - 1200-2000 rubles.
- π Replacement of speaker / microphone β 800-1500 rubles.
- π Full soldering fee (in case of serious damage) - from 5000 rubles.
If you have a warranty, don't disassemble it yourself, it will void the warranty. Take it to Xiaomi's official service (list on mi.com), but keep in mind that water is usually considered a "non-warranty" and you'll have to pay for the repair.
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Before visiting the service, take a picture of the IMEI phone (on the box or under the battery) to help avoid replacing components.
7.How to prevent water from getting back in: 5 tips
If you managed to save the Redmi Note 7, you should make sure that the incident does not happen again.
- π‘οΈ Buy a waterproof case (such as Spigen Liquid Air or Spigen Liquid Air). UAG It won't save you when you're fully immersed, but it will protect you from splashes and rain.
- πΏ Avoid using your phone in the bathroom. Statistically, 30% of smartphone drownings occur there.
- π Do not leave your phone on the edge of the table/shell. Use an anti-slip stand.
- π§ Stick a hydrophobic coating (like Liquid Nanoshield) that pushes water away from connectors and speakers.
- π± Enable the "Emergency" function SOS" in the settings of Xiaomi (Settings) β Passwords and security β Emergency. SOS). This will help you call for help if your phone falls into the water in a dangerous place.
If you are often near the water (fishing, hiking, on the beach), consider buying a waterproof phone bag, which is inexpensive (200-500 rubles), but will save the device even when diving to a depth of 10 meters.