What a glorious waste of time and money-the iphone.
Certainly here in the UK its great as is other 3g applications if you happen to live/sail in or near big population centres.
In the UK thats great on the south coast and up the east and west coast as far as central Scotland but once north of that forget it-no reception.
Yet those who live in or close to Urban Centres just dont get it.
My daughter who lives in London and works for Dell came up to stay with us and expected that she could keep in touch with her UK base and US base!
I am sure if you sail in Alaska;Oregon or parts of New England that its a no go as well?
Anyway whats the point if you have a compass; GPS and or charts; a log and echo sounder.what more do you need ?