iPhone flashlight not working? Fixes for every cause

You reach for the flashlight in a dark parking lot, and nothing happens. Or the button is greyed out, missing from the lock screen or only gives you a weak glow. These problems feel like a hardware failure, but they usually are not. On most iPhones the flashlight is the same LED as the camera flash, and the software can switch it off for several ordinary reasons.

This guide goes from the quickest and most common causes to the rare ones. Work through the steps in order, and use the camera flash test in the middle to learn whether you are dealing with a software bug or a broken part.

Why does the iPhone flashlight stop working?

• The camera is using the flash. The flashlight and the camera share one LED. If the Camera app, a scanner or a video call is open, the flashlight can turn off or grey out.
• The iPhone is hot. When the temperature climbs too high, iOS can switch off the flash and warn you that the phone needs to cool down.
• The control was removed. The button can disappear from Control Center or the lock screen after an update, a reset or a layout change.
• A software glitch. A stuck process or a bug in a new iOS version can leave the button tapping but doing nothing.
• Dirt, a case or a screen protector. Anything covering the LED makes the light look dim or dead.
• A failed LED or connector. A drop, water damage or age can break the part. This is the least common cause.

Quick fixes to try first

Flashlight missing from Control Center or the lock screen

If you cannot find the button at all, it was probably removed rather than broken. This happens after an update, a Reset All Settings or when someone else changes the layout. You can add it back in a minute.

Flashlight greyed out or turning itself off

A greyed out button is a lock, not a break. The Camera app and the flashlight cannot use the LED at the same time. Opening the Camera turns the flashlight off, and using flash in a photo does the same. Open Camera, switch to a mode that does not use the flash, close the app fully and try again.

Heat is the other common lock. The iPhone protects its battery and parts by cutting power to the flash when it is too warm. Cases that trap heat, wireless charging, gaming, a hot car and direct sun all trigger this. Cool the phone, then test. If the flashlight works only for a few seconds and then shuts off, check how the phone feels in your hand while you use it.

Flashlight is on but too dim

The camera flash test: software or hardware?

This test tells you whether the LED itself works. Open the Camera app, tap the lightning bolt at the top or the flash icon, set it to On and take a photo in a dark room. You can also record a short video with the torch icon on.

• Camera flash works, flashlight button does not: the LED is fine. The problem is software, so go to the update and reset steps below.
• Neither the flash nor the flashlight works: the LED, its cable or the logic board may be damaged. Skip to the repair section.
• Both work but only for a moment: suspect heat or a failing connection. Watch the temperature and see the repair section.

Software fixes if the LED still works

When the LED is broken: repair options

If the camera flash is dead as well, the part has likely failed. Common triggers are a hard drop, water damage and a flex cable that has come loose. The flash module sits with the rear camera, so the repair is not something to attempt at home.

• Check coverage first. A defect inside the one year limited warranty, or an AppleCare plan, can make the repair free or cheap. Use this warranty guide to look up your coverage by serial number.
• Apple Store or an Apple Authorized Service Provider. They will run diagnostics and quote the repair. Book a Genius Bar visit or use the Apple Support app.
• An independent repair shop. This can cost less, but ask about the warranty on the part and whether they use genuine parts.
• Weigh the cost. If the phone is old and the repair is a large share of its value, compare it with the price of a replacement. Our guide to AppleCare and whether it is worth it can help for your next phone.

Other ways to get light on an iPhone while you wait

• Use the Camera app's flash for a still photo or a video with the torch on. It is the same LED, so it only helps when the flashlight button is the problem.
• Turn on the Display brightness and a white screen. Open a blank white page, such as a note with no text, and raise the brightness to the top.
• Use a second device or a small keychain light until the repair is done.
• If you only need alerts, remember that the LED flash for alerts is in Settings › Accessibility › Audio & Visual. It uses the same LED and will not work if the LED is broken.

How to keep the flashlight working

• Avoid leaving the iPhone in a hot car or in direct sun, which is the most common reason for the flash to shut off.
• Keep the camera plate clean and use a case with a proper flash cutout.
• Install iOS updates when they come, and restart the iPhone once a week.
• Do not keep the flashlight on for long periods. It draws power and heats the phone.
• Keep the Flashlight control in Control Center and on the lock screen so it is one tap away.

Still no light? A short checklist

Run through this before you book a repair. The Camera app is closed. The phone is cool. You restarted it and updated iOS. You tried Control Center, the lock screen and Siri. The case is off and the lens is clean. You ran the camera flash test. If you can say yes to each of these and the flash is still dead, the part needs service. If the camera flash works and only the button fails, a Reset All Settings or an erase almost always fixes it. If the camera also gives you trouble, read our guide to fixing a camera that will not work.