Liquid contact indicator

Last updated July 16, 2024

A liquid contact indicator (LCI) is a small indicator that turns from white into another color, typically red, after contact with water. These indicators are small adhesives that are placed on several points within electronic devices such as laptops and smartphones. In case of a defective device, service personnel can check whether the device might have suffered from contact with water, to protect from warranty fraud.

Purpose

The main purpose of the liquid contact indicator is to have a lead to the cause of a defect in electronic devices. The manufactuer will not conduct a repair under warranty for a device with an activated LCI.^[1] Still there can be reasons for doubt.

Longer, but not extreme exposure of a device in a humid environment, can trigger a LCI.^{[ citation needed ]}
In theory water can reach the LCI(s), but still the electronics underneath it are not touched, for instance when a small drop of rain falls into the headphone connector.
A user should be able to use a device in normal circumstances. For instance a smartphone is normally used while travelling, quite often outside. It can rain, or start to rain outside. A device should not break down immediately. Still such circumstances could trigger the LCI.

So, a liquid contact indicator can be triggered, without pointing to liquids causing a defect.^{[ citation needed ]}

Forgery

In the simplest form, liquid contact indicators are good for a first lead to the cause of defects. LCIs can be replaced, they are readily available in online electronic stores. But the other interest, use in warranty claims, make them prone to potential misuse. Therefore, manufacturers introduced LCIs that are harder to reproduce, even with small holographic details.

Placement

Liquid contact indicators are placed on several places in electronic devices. For example, underneath the keyboard in a notebook and on several places on its mainboard. Sometimes the liquid contact indicators are placed in such a way that they can be inspected from the outside. For instance there is an LCI in the SIM-card slot of Apple iPhones and in the dock connectors and headphone jacks of iPods made since 2006.^[1] In a Samsung Galaxy smartphone there is a LCI underneath the battery cover near the battery contacts.

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References

1 2 "Water and other liquid damage to your iPhone or iPod isn't covered by warranty – Apple Support (UK)". Apple Support. Retrieved 15 July 2024.

Explanation of a Water Damage Indicator

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[:0-1] 1 2 "Water and other liquid damage to your iPhone or iPod isn't covered by warranty – Apple Support (UK)". Apple Support. Retrieved 15 July 2024.

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