[gbog]

This is not a phone, as someone noted in another comment.

It is a good old pocket computer, and it is modular, and mine may (or may not) have a telephony module.

I have a Galaxy Note, I think I use it as a phone twice a week on average. I use it as a HN browser, a camera, a podcast downloader and listener, a navigation, a game console, an e-reader, a translator, for contacts and calendar, and phone calls. Having a big screen is helpful in 9 of these 10 activities. Being big is annoying in 1 of them.

Moreover a big device has a much bigger battery, thus a somewhat better battery life (only somewhat because the screen is bigger too, and you use it more.)

[ctdonath]

Indeed, the classic definition of "phone" hardly applies to these devices anymore. They're Cray 2 supercomputers (well, "super" back in the day) shrunk into a matchbox and include, as one tiny program making use of the mic/speaker/radio, a "telephone"-like capability.