I need some help! I can't decide if I should make the leap or not.
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Should I just simply move off the the nextel network and onto sprint and go with a blackberry or really make the leap to the incredible iphone?
An additional perspective.
If you're a very phone-centric person and expect that your phone should have GPS, MMS, full support of bluetooth, long battery life, loud speaker/speakerphone, many SMS utilities... the iPhone will fall short of expectations out of the box. (Some features can be enhanced by hacking but you're risking your warranty.)
By sync if you mean wirelessly like a Blackberry, I'm afraid that the iPhone cannot do that out of the box either. It can fetch your mail on time intervals as short as 15 minutes, and allows yahoo mail to be pushed to you. All syncing (calendar, contacts, multimedia...) is performed by a cable connection to your computer. Just perform a sync when you need to. I sync the iPhone to my PC at work only for the calendar (outlook), and to my Mac for everything else. While you can receive email wirelessly, you cannot acknowledge Outlook meeting notices with the iPhone.
You can use Safari to navigate to Web based Outlook. However, I wasn't able to view attached documents thru webmail like I could on a full blown Safari browser running on my Mac. You should probably borrow a friend's iPhone or iPod Touch and see if the webmail experience meets your expectations. I still could read through all of my corporate mail and mailboxes, but I use the iPhone mail client instead.
Regarding coverage, I realize it's all relative but I've found AT&T to be better than Sprint overall, although AT&T does seem to have more difficulty in dense urban areas. If it's of concern, get a AT&T pay as you go phone and try it for a few months as you travel. That way you're not tied down to switch.
The other aspect is using the iPhone email client to fetch your corporate email. Your company's server needs to already support IMAP or POP, and SMTP. If not, your IT department needs to be willing to listen and accommodate your needs. My IT department was very helpful. If they try to play the security card, mention that the iPhone does have SSL support. We actually improved our overall security compared to pre-iPhone, by identifying and turning off unneeded ports.
Overall I'd say it's a good (not quite great) phone, but an excellent internet appliance. Whereas by comparison, most competitors are great phones but lousy internet appliances. (The Blackberry's forte is email, the Sidekick's is chatting, the iPhones forte is web browsing). While the iPhone may not compare as well to it's competitors on paper, it's how it does it and without drama. The interface is more than good looks, it's quite efficient, logical, and fast. The one weak point is if you're multitasking (playing iPod music and navigating Safari on dense webpages may cause both processes to be upset). But it's rare that when asked to do a single task that the iPhone doesn't deliver. For the most part, the OS is quite stable for a mobile device.
Oh, and you'll probably encounter the 3G network argument sooner or later (the iPhone doesn't support the faster 3G network unlike some other smartphones). In most uses I'd say that EDGE + iPhone Mobile Safari is as about as fast as 3G + Windows Mobile Explorer... it's because Explorer is that bad IMHO. I use the iPhone on the EDGE network much more than I thought I would or could. And I find it telling that the most popular "smartphone" apps, are the ones that disable 3G so as to enhance battery life. Read into that what you will.
Good luck on your decision,
JnC