After more than 15 years covering everything Apple, it’s with a heavy heart we announce that we will no longer be publishing new content on iMore and the iMore forums will be closing as of November 1st, 2024.
Actually you're not stuck with the iPhone 2G all you need to do is go to an at&t store and show them you want to do a IMEI swap from a 2G to your iPhone 4 and you will be able to get the smartphone unlimited data plan for $30
This procedure still works because I still use it to close sales when a customer wants to go with any new smartphone on at&t and wants the unlimited smartphone data plan.