Into the toilet, the pool, a spilled drink or a rainy afternoon. A wet phone is one of the most common faults — and one of the ones that depends most on what you do in the first few minutes.
Here’s what actually works, what to avoid, and why a phone that “seems fine” after getting wet can fail a week later.
What to do immediately
- Get it out of the water and turn it off. As soon as possible. A circuit with water and power is what causes serious damage: current flows where it shouldn’t and corrosion speeds up dramatically. If the screen doesn’t respond, use your model’s force shutdown button combination.
- Don’t charge it. Not even “to see if it works”. Pushing 5–9 V into a wet port is one of the fastest ways to burn out the charging circuit.
- Remove the case and the SIM tray. It helps air circulate.
- Dry the outside with a lint-free cloth. Gently shake it with the port facing down to let trapped water out.
- Leave it off somewhere dry and ventilated, and get it checked as soon as possible if water really got in (submersion, not a few drops).
What NOT to do
- Don’t put it in rice. It’s the most famous remedy and it doesn’t work: rice doesn’t draw water out of the inside, it leaves dust and starch in the port and, above all, it makes you lose days while corrosion spreads inside. Manufacturers themselves advise against it.
- Don’t use a hair dryer or leave it in the sun or on a radiator. Heat can lift the screen, damage the battery and push water further in.
- Don’t keep turning it on to check if it works.
- Don’t blow into the port or poke cotton buds into it.
Why water damages a phone
Pure water barely conducts electricity, but everyday water — tap water, pool water, sea water, a soft drink — carries dissolved salts, chlorine and sugars. When it gets onto the board, two things happen:
- Immediate short circuits: the liquid connects points that shouldn’t be connected. If the phone is on, components can be damaged on the spot.
- Corrosion: over time, the liquid plus battery voltage oxidise solder joints, traces and connectors. Green or white residue appears that eventually breaks connections or creates new shorts.
That explains something that confuses many people: a phone can work perfectly after getting wet and start failing days or weeks later. A speaker that sounds odd, Face ID that stops working, charging that fails, or suddenly it won’t turn on at all.
Sea water and sugary drinks are the worst: salt is highly corrosive and sugar leaves a sticky residue that traps moisture.
”But my phone is water resistant”
An IP67 or IP68 rating means the phone survived freshwater submersion under lab conditions when it was new. Over time:
- Adhesive seals degrade with heat and age.
- A drop can open a small gap.
- If the phone has been repaired (screen, battery), water resistance depends on whether a new adhesive seal was fitted.
The rating also doesn’t cover salt water, chlorinated pools, pressurised water or drinks. And most manufacturers don’t cover liquid damage under warranty.
What we do at the bench
When a wet device comes in, the process is:
- Open it and disconnect the battery to cut power as soon as possible.
- Inspect the board under the microscope, looking for liquid and corrosion.
- Clean the board with high-purity isopropyl alcohol and an ultrasonic bath, which removes corrosion and residue from under chips where a brush can’t reach.
- Dry it properly and measure the power rails to detect shorts.
- Replace damaged components — shorted capacitors, filters, connectors — using micro-soldering where needed.
- Test every function before handing it back.
The sooner the device arrives, the less corrosion there is and the better the chances of saving it — and of recovering your photos and data even if the phone itself can’t be saved.
Summary
| Do this | Avoid this |
|---|---|
| Turn it off immediately | Charging it |
| Remove case and SIM tray | Putting it in rice |
| Dry the outside and let it air | Hair dryer, sun or radiator |
| Get it checked soon | Waiting to see if it “fixes itself” |
Wet phone in La Ribera?
At Systemaxo we do ultrasonic board cleaning and liquid damage repair in Carcaixent, Alzira, Algemesí and nearby towns (Valencia). Contact us as soon as possible: with liquid damage, time matters.