Flood Illuminator

An essential part of the advanced Face ID system used by the iPhone is the Flood Illuminator. We’ll go into detail about what it is, why it is crucial, and how to fix it if something goes wrong.

What exactly is a flood luminator?

The iPhone X marked the debut of Apple’s Face ID technology, which completely changed how we lock and unlock mobile devices. It substituted a biometric identification technique based on facial recognition for the fingerprint-based Touch ID.

One essential component of this system is the Flood Illuminator. Regardless of the lighting conditions outside, a dedicated infrared (IR) light emitter floods your face with invisible infrared light. The phrase “Flood Illuminator” refers to a light source that evenly lights your face and enables an infrared camera to take a precise depth map of your face.

Why Is It Important?

The Flood Illuminator makes sure the Face ID system functions reliably in a variety of lighting situations. The Flood Illuminator makes it possible for the infrared camera to clearly view your face whether you’re in a dimly lit space or in direct sunlight. Face ID is a trustworthy and secure biometric authentication technology because of how quickly and correctly your iPhone can recognize your face because to its consistency.

How Can the Flood Illuminator Be Repaired?

The Flood Illuminator may be at blame if Face ID on your iPhone isn’t functioning as intended. It’s crucial to keep in mind that some iPhone repairs, especially those requiring Face ID parts, can be very challenging.

If not done correctly, attempting to fix Face ID parts like the Flood Illuminator risk more harm. This is due to the fact that each iPhone is manufactured with these components specifically matched together for security reasons. Your Face ID may not work even if you replaced the defective part with a genuine one since the phone won’t verify the new component.

For this reason, consulting a specialist is strongly advised when addressing Face ID problems. Make an appointment with an Apple Store or a licensed service provider if your iPhone is still covered by its warranty or AppleCare+. They can identify and fix the problem thanks to their specialist equipment and knowledge.

You might be tempted to do it yourself or find a less expensive repair provider if your gadget has passed its warranty period and you are unable to afford a professional repair. Be advised that trying a DIY repair on your iPhone or using unapproved repair services, especially on important parts like those involved in Face ID, can cause further issues and even permanently disable Face ID functioning.

Advanced Technique

For a flood illuminator with liquid damage, first:

Using a hot air gun set at 240 degrees, remove the module from the flex cable.

Don’t burn it by evenly dispersing the heat.

In the area where the solder contacts are, use a little flux (Not too much because it can get inside the module and damage it)

Clean the solder pads on the flex cable and the underside of the module.

Take out any rust you discover.

After removing the old solder with solder wick, re-solder the pads with fresh material.

On the pads for the flood illuminators, carefully repeat the procedure.

Solder it back in place at the same temperature as before.


Face ID is one of the safest and most user-friendly biometric verification methods in consumer electronics thanks in large part to the Flood Illuminator, a small but crucial component. The best course of action to get Face ID working properly again if you’re having problems with it is to get professional repair. Do not forget that maintaining the integrity of your equipment is as crucial to resolving the current problem.

Eric Chan

Hi! I’m Eric and I work on the knowledge base at GadgetMates.com.  You can see some of my writings about technology, cellphone repair, and computer repair here.

When I’m not writing about tech I’m playing with my dog or hanging out with my girlfriend.

Shoot me a message at ericchan@gadgetmates.com if you want to see a topic discussed or have a correction on something I’ve written.

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