Tangram is an ancient Chinese puzzle. This activity is sometimes called "seven pieces of cleverness." The object of the puzzle is to rearrange the pieces of a square (the puzzle pieces) to form figures (like a picture of a cat) using the tangram pieces .
Allows the application to access the phone features of the device. An application with this permission can determine the phone number and serial number of this phone, whether a call is active, the number that call is connected to, ect.