I am thinking about designing a qwerty case for my note 9, this time 3d printed. However, on this new phones, a slider keyboard is not practical because of the position of the camera and fingerprint sensor on the back. The keyboard would cover them: https://i.imgur.com/IBimWR4.jpg That's why i think a flip option could be better: https://i.imgur.com/CRmChwN.jpg And I think a note phone is a better option because of the pen which resembles the n900 pen