PTR is pretty common on iOS, so users are pretty well trained to do just that. It's rare enough on Android that it's usually a bad idea. On the other side of t

PTR is pretty common on iOS, so users are pretty well trained to do just that. It's rare enough on Android that it's usually a bad idea. On the other side of the coin, you have the Menu button on many Android devices that pops up ancillary actions that don't fit on the screen. I can't tell you how many bug reports I get for functionality that I've buried in there, but if I was paid a dollar for every one, I'd be rich. And this is a control that has been around for five years...