A free app for Android, by NoWi Apps.
The White Screen Flashlight app is the best tool to use as a mobile flashlight. It works with any mobile phone that has a screen and a working flashlight or torch. It is very useful in a dark or very light environment. The app has a simple interface and you can use it in two different ways: as a normal flashlight or as a light bulb.
When the app is turned on, the display will turn to full brightness, and you can use two sliders to adjust the brightness or adjust the flashing frequency. There is also a mode called SOS, which is used in dangerous emergency situations.
