AT&T rolls out unlimited $20/month data-only plan for pre-paid Pay-As-You-Go plans – great news for iPhone

If using your Apple (NSDQ: AAPL) iPhone as a web-device/internet tablet is more compelling than using it as an actual, you know, phone, then you’ll be glad to hear that AT&T (NYSE: T) is on your side. AT&T has just announced their new data-only plan available through AT&T’s Pay-As-You-Go pre-paid wireless service. At just $20 per month, the new unlimited data-only rate plan gives iPhone hopefuls the option to put the huge multi-touch display to good use in gaming, internet, email, PDA functionality – everything but voice calls.

Here’s how you get your iPhone to work as a data-only internet tablet for just $20 a month.

• Buy an AT&T pre-paid SIM card and load it with minutes
• Activate your iPhone to work with the Pay-As-You-Go SIM card through iNdependence
• Call “611″ and register your new SIM card
• Use the telephone-based system to buy the “Unlimited MediaNet” package for $19.95 (at the voice prompts, indicate that you want to “Buy Features” and then “Data Packages”)

Now, keep in mind that the unlimited data package is only good for a month, and you’ll need to re-up your pre-paid account with another data-package purchase every 30 days. Going over the unlimited 30-day period will have AT&T charging you $10 for every megabyte that you pull down.  But, that could be a risk worth taking for cheap, unlimited data on your iPhone.

[Via: TUAW]