I’m always the annoying guy praising how good the Vita is.
One of my favorite thing about it is how repairable it is! The screws are even color-coded! Changing anything is ridiculously easy. (Changing the screen is a bit harder but you can change the whole front shell which includes the screen very easily)
Not if signal doesn’t want to support WhatsApp, and I don’t think they’re going to unfortunately :(