I must confess I am not completely certain whether it is the phone or the carrier that helps with visual voicemail which you can also access on the net. I know when had iMate through AT&T, I had it. But, Verizon hasn't given me that option so I guess it's the carrier.
I recall when we had this discussion before, and the vote was 10 users for iPhone and just I for Win6.1. George even went as far as to say Microsoft would be out of business in a few years.
I will state that until the FCC steps in and busts up AT&T, Sprint and Verizon, service will be ridiculously expensvie and the Unicels and U.S. Cellulars really can't compete along with others. I wonder how much longer T - Mobile can hang on.
But, the real issue is phones being limited to carriers. That's a joke. The real reason I can't get into the discussion with everyone on iPhones is it looks great, but it doesn't work well if I can't make a phonecall. And, why AT&T has terribel coverage is beyond me except that I guess the Moose all knock down the towers. It's great if you live in NYC, Denver or any town with a population over 100.
It would be nice if you could choose your carrier and all phones were "unlocked" and you could simply pick a phone. If you get a package deal with a two-contract, unless you have Martin's drawer (I do have one like it but no phones, especially after the burglary), it's hard to go out and buy a Droid or a Palm Pre, etc.
There is this cool site, though, where you can rent a phone for a month and try it out. But, you have to have the service.