Because there are only two touch-sensitive zones, which are the left and right half of the display, and you can only detect a swipe from one side to the other with that.
Probably the screen is just too small to reliably provide more than that. Although I wonder if the screen itself doesn't detect touch position more precisely than that, and that information would somehow be accessible?
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Because there are only two touch-sensitive zones, which are the left and right half of the display, and you can only detect a swipe from one side to the other with that.
Probably the screen is just too small to reliably provide more than that. Although I wonder if the screen itself doesn't detect touch position more precisely than that, and that information would somehow be accessible?