Average age, you asked? ... I'm 62... Just got my GN2 20Dec12... Came from the HTC HD2, which after 2 years started messing up!! I like the GN2 big screen, as I did the HD2 when it came out. I hope that somehow I can keep this one going for the next 10 years. I don't need to pay 700USD for a phone every two years!!! My provider is T-Mobile CZ. I buy credit, it lasts me a minimum of four weeks, sometimes six. (I don't call much, but do a LOT of data downloading (news feeds mostly).
Already noticed that I cannot connect my GN2 to my laptop... well, the laptop can read the files that are on the GN2, but I cannot add / manipulate files that are already there... back to the online manual.
PLUS, this cable for recharging this phone does not fit properly into the phone-slot. Funny, the same cable from my old HD2 fits just right!!! growl, grumble!!!
I know that this will be a learning process...