4g is a moot point at the moment, unless you’re lucky enough to live in one of the few dozen cities worldwide where Sprint currently offers 4g service (not likely). Otherwise the EVO will revert to regular 3g usage. However they are adding more 4g areas, and inside of a year or two your phone will likely be in a 4g area, the catch obviously being by that time you’ll probably be upgrading again. That having been said, 3g will more than likely fulfill your needs.
Sprint network is WAY better than the AT+T network. Not even a competition. I have heard horror stories from many AT+T users how they don’t have any service in their house or apt…. in rural backwater cities like…. New York City.
The Sprint monthly plan for internet service is flat one rate (10 dollars additional to your regular phone plan), as opposed to the by the megabyte or whatever system AT+T uses.
EVO has 8mp cameras on front and back as opposed to the 5mp cameras on the iphone 4.
EVO has the droid market of apps, which as long as you’re willing to put in the 20 minutes research time on the net to find the good apps names, is as good if not better than the iphone apps. They even have some apps that iphones don’t have, like the metal detector (which does work, but isn’t that great), or most notably swype (which will makes texting/typing on your phone way easier).
The OS on either phone is a wash. Completely personal preference.
The iphone currently has the problem with reception if you hold it in your left hand. Apple is offering free cases to remedy the problem, and will likely fix it in all the future iphone 4’s they make. But for the time being definitely something to keep in mind.
Up front price is really a wash. They’re about the same once you sign the 2 year contract.
EVO has FM radio tuner, if you want that type of thing.
iPhone battery is supposed to last longer, but both phones batteries will make it through a whole day of regular use without dying.
Honestly though. Do you really need a brand spanking new phone? What are you going to be doing with it that you need all that stuff? I wanted an EVO, and when I went in the sales guy talked me down to the HTC Hero (has the same strength camera as the iphone 4 even), which does everything I want and only cost 50 dollars (after rebate). Plus its been around for a while so all the problems had been worked out.
Other state of the art phones to consider are the Incredible and the X (which may not be out yet). The incredible is comparable to both the EVO and the iphone 4, the X will be the best of all 4.