I checked the size of my Samsung Galaxy SII phone's screen: 480 X 800 pixels.
I then developed an Edge Animate with the dimensions 480 X 800 pixels.
When I run my Edge Animate composition on my phone, it appears as a little box much smaller than the screen.
i dont know why, but if you try to make your project in percentage the problem would be solved
There's a possibility that your Samsung device is scaling your composition - does it look about a quarter of the size, as if it were doubling pixels? All we do is pass along the pixel size to the browser, so it's probably more an issue with how the browser interprets the declared size than it is with the composition itself.
My Samsung device is definitely scaling my composition. My coworker found a solution: Setting the viewport metatag seems to solve the problem.