@purplevvay Hi, your designs look great!
The icons look awesome, the only thing I would keep as full text is the emergency text, because it would be more visible. Also the arrow at the bottom is inverted, in the system apps ( contacts, weather, calculator... ) the arrow is oriented the other way.
Sure also the mobile landscape mode should be designed. I've put the user icon on the left of the username in my designs to fit also this need. Otherwise the keyboard might overlap the login field. Making it look the same on all screen sizes would be better for convergence. On my phone the space available is less than half of the screen height (other phones with different screen ratio might have less space).
I don't understand the function of the keyboard icon. Can't I just tap on the input field to open keyboard and swipe down to hide it?
My idea for the back button is to use a left to right swipe to go back. I've thought the login as a succession of screen displaying all users and quick app access. Swiping left/right would allow you to switch screens.
so, interesting, if we get rid of the box background completely, error text is not really visible. It is looking good replacing the text with white to match. here are screens, one no background, one with .3 opacity
Maybe we can change the way we display errors: