Torch Test

How to test your phone's torch

1. Open the page on your phone in Chrome, Samsung Internet or Edge, and tap Start torch test.
2. Allow the camera when asked. The torch is part of the camera, so browsers need camera permission to switch it. Nothing is recorded.
3. Tap Turn torch on and look at the LED next to the back camera. The yellow circle on the page shows what the phone has been told to do.
4. Try Strobe at different speeds and SOS to check the LED switches cleanly. Tap again to stop.
5. If torch control is not available, tap Screen light for a full white screen.

What the results mean

The status boxes show whether the browser can control the torch, what it has been told to do and which camera owns the LED.

• Torch control: Supported, LED lights up: the flash works.
• Supported, but the LED stays dark: the phone accepted the command but the LED did not light. That points to a failed LED, a broken flex cable or, after a repair, a flash that was not reconnected.
• LED flickers or is dim: often a heat or battery limit. Phones dim the torch when hot or below about 15% battery. Let it cool, charge and try again.
• Not available: the browser cannot control the flash. This says nothing about the hardware. Test it from the phone's own torch shortcut instead.

Which phones and browsers can control the torch

Websites switch the flash through the camera's "torch" setting. Chrome, Edge, Samsung Internet and Opera on Android support it on most phones. Firefox on Android does not. On iPhone, support depends on the iOS version and is limited, so if the page says "Not available" use the torch button in Control Centre to check the LED. Laptops and webcams have no flash, which is why the screen light is offered as a fallback.

Some phones put the LED on one specific back camera. The test tries each back camera until it finds the one with a torch, which is why the camera name may say "camera2 0" or "back camera 1".

If the flashlight does not work

First rule out software: restart the phone, close the camera and any app that uses the flash, and turn off power saving. If the torch tile in quick settings is greyed out, the camera service is stuck; a restart usually clears it. On Android, clearing the storage of the Camera app helps when the flash works in the torch but not in photos. If the LED never lights in this test, in the quick setting or in the camera, the LED or its cable has failed and needs a repair. Check the rest of the camera with the camera test.

Common problems and fixes

The torch says "Not available"

Your browser cannot control the flash. Open the page in Chrome on Android. On iPhone, test the LED from Control Centre instead.

Camera permission was blocked

Tap the lock or camera icon in the address bar, allow the camera for this site and reload. The camera picture is only shown to you.

The torch turns off by itself

Phones switch the torch off when they overheat or the battery is low, and browsers turn it off when you leave the page. Keep the page open and let the phone cool.

The flash works here but not in photos

The LED is fine. Clear the Camera app's cache or data, check the flash setting in the camera app, and update the phone.