Thanks for taking the time to reply. So in a nutshell your saying buy a phone plan (I have an iphone) and use that along the way and pick up wifi where i can for free?
That's the basic idea.
The minimum-trouble solution would be to use your iPhone as-is, but that would be expensive without a foreign data plan. Our friend was surprised to find that her iPhone worked in France, so used it normally for a week, racking up a $4000 bill in the process.
A reasonable solution would be to buy a plan from your provider that will work in the USA for the amount of time that you plan to be on the trail, and still keep mobile data turned off, relying on wi-fi for updates normally.
The lowest-cost way to go would be to get one of the pay-as-you-go phones like the one I mentioned above, activate it, and then you'll have phone service (even international calling, at a premium), and a smart phone that you can use almost exclusively on wi-fi, conserving your data allocation. This is the route I'm taking. Also, if I lose the phone, the financial impact is just $25, and I can pick up another at a Wal-Mart (a common American retail store) along the way. Were I to accidentally turn on data on an iPhone in a foreign country, that could exceed $25 in a matter of minutes. The downside is that if your iPhone is your camera, you'll want to bring it, anyway, as cheap phones have horrible cameras. I have a standalone camera, so this will not be an issue.