Costs
The HTC EVO 4G is $199 after a $100 mail-in rebate with Sprint, but you can get it elsewhere (like Radio Shack and Best Buy) for $199 straight up. The iPhone 4 will be $199. Service plans get much more complicated, but basically:
* AT&T you can get as low at $55 with 200MB of data, 450 minutes of talk, and no messaging. If you want unlimited voice and messaging, along with 2GB of data (the most AT&T will pre-sell you, it's $10 per GB after that), you'll be forking over $115 a month.
* Sprint requires you to go for a minimum $80 plan (that includes the required premium data plan add-on for the EVO), which includes unlimited data, unlimited messaging, and 450 minutes of talk. To bump up to unlimited everything (and that $10 premium data charge insures a true unlimited data) you'll be spending $110 a month.