This is another incredibly awesome use for 3D printing. The British company, OwnFone is now offering customizable braille phones. What's even more amazing is that the backs and fronts, of the phones, including the raised braille is all 3D printed. The phones are currently only available in the UK, however they have plans on expanding internationally, with the help of Kickstarter later this year. More information on the OwnFone Braille can be found here: http://3dprint.com/3930/ownfone-braille-3d-printed/
Check out a picture of the 3D printed braille phones below: