I haven't made the leap to electronics on the bike yet, and probably won't.
It's enough that I get out and ride.

I'm far-sighted, and usually need my +2.75 readers to manipulate the phone. The phone is for actually calling people, and maybe the odd crappy photo or two.
GPS, Data, and Apps I don't do at all. I'm connected enough at home with the computer on Wi-fi, and that's it. If I were willing to pay for the data, I'd probably use the GPS, maybe.
I really don't need to be connected to devices while I'm on the bike- a ringing phone is bad enough.

-D.S.