iPhone Water Damage Indicator (LCI): Where to Find It and What It Means

Every iPhone contains a small sticker called a Liquid Contact Indicator (LCI) that changes color when it contacts water or other liquids. Apple technicians check this indicator during repairs to determine whether a device has been exposed to liquid. Understanding where your LCI is located, what it looks like, and what triggers it can help you make informed decisions about warranty claims and repairs.

What Is the Liquid Contact Indicator?

The LCI is a small strip of material that is normally white or silver. When it comes into direct contact with liquid, it turns red or pink and stays that color permanently. Apple places one or more of these indicators inside every iPhone, iPad, iPod, and Mac. They have been a standard part of Apple hardware since 2006.

The indicator uses a water-sensitive dye that reacts irreversibly. Once triggered, it cannot be reversed, bleached, or reset. This is by design: it provides Apple service staff with a definitive answer about whether liquid entered the device.

Where to Find the LCI on Your iPhone

The location depends on your iPhone model, but on modern iPhones it is visible through the SIM card tray slot without opening the device:

• iPhone 5 through iPhone 12 models: Remove the SIM tray and look inside the SIM slot. The LCI is a small dot visible on the interior wall. You may need a flashlight or a magnifying glass to see it clearly.
• iPhone 13 and iPhone 14 models: Same location, inside the SIM tray slot on the left side of the device.
• iPhone 14 Pro, iPhone 15, iPhone 16 (US models): These models removed the physical SIM tray in favor of eSIM. The LCI is still present inside the device, but it is only visible to Apple technicians who open the phone during service. You cannot check it yourself on these models.
• International iPhone 15 and 16 models with SIM tray: The LCI remains visible through the SIM slot, same as previous generations.

To check: eject the SIM tray using the included SIM tool or a straightened paperclip. Point a flashlight into the open slot and look for a small rectangular or circular indicator. White or silver means no liquid contact. Red or pink means liquid has reached the indicator at some point.

What Triggers the LCI?

The indicator reacts to direct liquid contact, not humidity or vapor. However, in practice, several scenarios can trigger it:

• Submersion: Dropping the phone in water, a pool, a toilet, or any body of liquid will almost certainly trigger the LCI.
• Heavy splashing: A significant splash that forces water into the SIM slot area can trigger it, even if the phone was never submerged.
• Sweat exposure: Using a phone while exercising heavily can introduce enough moisture through openings to trigger the indicator over time.
• Steam and condensation: Using the phone in a steamy bathroom or moving it rapidly between extreme temperature environments (cold outdoors to warm indoors) can cause condensation inside the device, potentially triggering the LCI.

Importantly, a triggered LCI does not necessarily mean the phone is damaged. It only means that liquid reached the indicator. Many phones function perfectly fine after minor water exposure, but the LCI has no way to distinguish between a harmless splash and a damaging soak.

How the LCI Affects Your Warranty

Apple's standard one-year warranty and extended AppleCare+ plans do not cover liquid damage. If you bring your iPhone in for service and the technician finds a triggered LCI, Apple may decline warranty coverage for the reported issue, attributing it to liquid damage.

There are some important nuances to understand:

• A triggered LCI does not void the entire warranty. It specifically allows Apple to deny coverage for damage they determine was caused by liquid. If you have an unrelated issue (such as a software bug), the LCI should not affect that claim.
• AppleCare+ with accidental damage coverage does cover liquid damage incidents, but with a deductible. If you have this plan, a triggered LCI still results in a covered repair, just with the applicable service fee.
• Water resistance claims are separate. Although Apple advertises iPhones as water resistant, their warranty explicitly excludes liquid damage. The water resistance rating is presented as a feature, not a guarantee. For more details on what the rating actually means, see our article on iPhone water resistance explained.

Can You Prevent the LCI from Triggering?

The only reliable prevention is keeping liquid away from the SIM tray area and other openings. Because the LCI reacts to direct liquid contact rather than vapor, the key is preventing water from entering the device in the first place:

• Use a waterproof pouch for beach, pool, or water sport activities.
• Avoid using your phone in steamy bathrooms or saunas.
• Wipe the phone thoroughly after sweat exposure during workouts.
• Do not charge the phone if moisture is detected in the port.

For a comprehensive list of protective habits, see our guide on protecting your phone from water damage.

What to Do If Your Phone Gets Wet

Whether or not the LCI has triggered, the immediate priority after water exposure is removing moisture from the speakers and ports before it causes functional problems. A triggered LCI is a historical record, but active moisture in the speaker is a current threat to audio quality.

1. Dry the exterior with a lint-free cloth immediately.
2. Remove the SIM tray (if applicable) to allow airflow into the slot area.
3. Clean the speakers using acoustic frequencies that physically push water droplets out through the speaker grille. This is the same mechanism the Apple Watch uses after swimming.
4. Let the phone air dry in a well-ventilated area for at least two hours before charging.

The speaker grilles are the most vulnerable point because they are open by design. Residual water on the speaker membrane causes muffled or distorted audio that may worsen over time if not addressed. Our guide on ejecting water from iPhone speakers covers the cleaning process in detail.

Water reached your phone? Even if it seems fine, clean the speakers now to prevent long-term damage. WaveFix ejects trapped water using safe acoustic frequencies.

LCI Myths and Misconceptions

A few common misunderstandings are worth clearing up:

• Myth: You can reset the LCI with bleach or alcohol. The dye change is permanent and irreversible. Attempting to alter it can damage internal components and is considered tampering, which voids your warranty entirely.
• Myth: A white LCI means the phone has never been wet. It means liquid has not reached the specific spot where the indicator is placed. Water can enter through the speakers or port without ever contacting the LCI inside the SIM slot.
• Myth: A triggered LCI means the phone is broken. Many phones function normally for years after a single water exposure event. The LCI is a contact record, not a damage assessment.

The Liquid Contact Indicator is a useful diagnostic tool, but it tells an incomplete story. What matters more than the color of a sticker is whether moisture is actively affecting your phone's components right now, and that is something you can address regardless of what the LCI shows.