How to Tell If a Phone Has Water Damage

Immediate Signs of Water Exposure

If your phone has been submerged or exposed to liquid, check the liquid contact indicator (LCI) first. On most phones, the LCI is a small sticker inside the SIM tray, charging port, or headphone jack that changes from white or silver to red or pink when it contacts water. A tripped LCI is one of the strongest visual clues that liquid has entered the device.

Beyond the LCI, look for physical residue. Mineral deposits, a milky film under the screen, or a faint sour or metallic smell near the charging port often signal that moisture has reached internal components. Even if the phone appears dry now, residue left behind can corrode circuits over time.

Behavior Changes That Suggest Water Damage

Water damage does not always show immediately. Watch for these warning signs in the days and weeks after exposure:

• Touchscreen unresponsiveness or flickering, especially along edges
• Charging problems or the phone only charges in a specific position
• Speaker or microphone muffled, distorted, or completely silent
• Bluetooth and Wi-Fi dropping frequently
• Random shutdowns or the phone feeling unusually hot during light use
• Corrosion or rust visible on internal pins or the battery connector

Hidden Damage and Long-Term Risks

Some effects are not obvious at first. Liquid can cause short circuits that slowly degrade the battery, display flex cable, or motherboard. Corrosion often begins where solder joints meet, which is invisible without disassembly. Even if the phone works normally now, early internal damage can shorten its lifespan.

What to Do If You Suspect Water Damage

If you find a tripped LCI or notice any of the symptoms above, power off the device immediately and do not attempt to charge it. Avoid using rice or heat sources, which can push moisture deeper. Instead, seek professional diagnosis from a repair technician who can open the phone, clean corrosion, and test individual components before permanent failure sets in.