How to Enable Volume Press / Screen Touch to Capture on HTC One M8
By default, you need to press the shutter icon to capture images on HTC One M8, but you can also press the volume button or touch to capture as 2 ...
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At the first look, the default calculator of your Galaxy device, is a simple calculator with some general operations. If you want to turn it to a scientific calculator, you just need to rotate your device to left or right, while the application is open.
As you see, you are able to use more functions such as Log, Ln, Sin, Cos, Tan, X! and more...
** To enable Screen Rotation, drag down the notification bar and make sure "Screen Rotation" is active.