I wonder why on earth mobile phones usually have controls on top of the screen, but not on the bottom. Phone call app has search bar on top. Call activity tab on top. The default sort behavior, when searching, is to put more relevant results from top to bottom. Why not bottom to top?
This design decision is especially annoying on larger screen devices.
At least invoking keypad is lower-right corner.
Because on iOS Safari any touch on the lower area reveals the autohidden bottom toolbar, so now the button has moved up, and now you have to click on it again for it to work.