I find the method for answering a call cumbersome.

I don't quite understand what's swipe doing here. Why is it needed at all? Why doesn't the phone show the green and red buttons to accept or reject a call and that's it?

Anyway, is there an app out there to make it easier and faster to answer calls? Can it be made or is this "forbidden territory" needing some sort of deeper tweaking on the phone's firmware?

Thanks.