How to Sort Apps Alphabetically on Galaxy Note 3
The default Samsung launcher, TouchWiz, lets you sort installed apps in app draw in 3 ways: Customizable gird, Alphabetical grid, and Alphabetical ...
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Some smartphones such as Samsung Galaxy S III have flashlight widget installed on the device. You just need to select the Assistive Light from the widget list.
If you are using a phone or tablet which doesn’t have such app or widget, you can try Tiny Flashlight + LED which is free for download in Google Play.
Note that this feature turns your camera flash into a flashlight may use battery very much, so use it when necessary