OK so the iPhone does have a built in GPS locator, in that case why don't I have to update the satellite positions like I do on my TT? if I don't do that it can take ages to start mapping after start up in the car. I'll check that I didn't start off before it achieved some-kind of sat-lock although the GPS indicator had all of the green bars lit up.
Maybe I'll give feedback saying that if a warning of 'GPS signal lost' is displayed then the phone should vibrate as well to bring attention to it (I keep mine is in my back vest pocket).
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iPhone & GPS new
iPhone & GPS new