So I managed to return to ATT 28 days ago and get unlimited data (the iPhone 2g trick). I love my iPhone 4 and unlimited data and never want to cancel it. Trouble is, work just gave me an iPhone 4 for free. So, I'm faced with the following: Do I cancel my iPhone 4 and my number that I've had for 12 years and keep just the company iPhone? I know this seems obvious, but I'm certain the company phone has 2gigs / 200 SMS plan, which scares me since I use a lot of data. Canceling it would be covered under the "30 day trial" and not cost me a penny. Plus, I would save ~ $80/month as I'd only be paying for my wife's 3gs. I'm just worried something may happen to my job one day causing me to lose my iPhone 4 and re-enter the wireless world under silly data caps and non-existent unlimited data on any carrier... If you were me, what would you do?