I can imagine the 'typical' mobile-using passenger chatting ...

Hi ... yeah, we're on the runway ... (pause) ...

... yeah, we're accelerating down the runway ... (pause) ...

... hi! Yeah, we've just taken off ... (pause) ...

... hello ... are you still there? OK, we've just passed through the first cloud layer ... (pause) ...

... Oh, hang on ... sorry, that was the second cloud layer ... we've just gone through another one, looks like it's the top one ... (pause) ...

... What? Sorry, I can't hear you ... can you speak up? ...

... Cool! The plane's just banked round about 30 degrees ... (long pause)

... sorry, I just went to the loo ... I guess we're at cruising altitude, now (pause) ...

... (pause)

... I think we're flying over some sea ... or is it land ... now, it's definitely sea. ... (pause) ...

... etc, etc, etc.

-- Henry