I have patents 6418323, 7831208, 6850782 which cover using Morse code on a phone to send and receive text messages.
The advantage is you don't have to look at the phone's display when composing or 'reading' text messages. The phone can be in your pocket and you can send/receive messages without bothering others.
Obviously, it never caught on, but I thought it was a fun idea.
This is actually something I would use -- say, while driving. Emoji would probably throw me off, though.
I learnt Morse at age 12 or so, actually used it regularly on amateur radio for quite a while, but haven't used it for probably about 20 years. I can still "read" it when I hear it, without even thinking about it.
The advantage is you don't have to look at the phone's display when composing or 'reading' text messages. The phone can be in your pocket and you can send/receive messages without bothering others.
Obviously, it never caught on, but I thought it was a fun idea.