It also improved the field of view for the display — you can view the display from an oblique angle and it looks great.
This could get annoying in public places, where you don't want people looking at your phone.
This could get annoying in public places, where you don't want people looking at your phone.
At least, that was my experience of trains in Tokyo, anyway.
I don't know any decent-looking vendours who sell them, be it for iPhones and other devices, so it might be your chance to get entrepreneurial