In order to have this option with an IPhone (and I assume the IPad) you have to have a purchased program like Navagon (currently, the favorite from what I have read on the web). I think it costs $40 for the app. Tom Tom also has a popular app, but I think the Navagon is known to be the best.
The Android Google GPS vocal guidance is free - and it's terrific. I have it with my Droid 2.
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Jim Saklad mailto:jimdoc@me.com
Apple: Rise, and rise again, until lambs become lions
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Jim Saklad mailto:jimdoc@me.com
Apple: Rise, and rise again, until lambs become lions
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