How to Use NFC Tag to Unlock Android Lollipop Devices
On the Android Lollipop phones and tablets you can easily tap your device to an NFC tag to unlock it, thanks to the smart lock feature. To unlock ...
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How to Use Android Camera Flash as a Torch
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
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