SUCCESS!!!
After not being able to get the $5.99 T-Mobile plan to work for me (because of the pricing) I went ahead and tried to get the cheapest option I could find, and that turned out to be the $19.99 Unlimited MediaNet option from AT&T.
I found all of the details here:
http://www.tuaw.com/2008/05/12/finally-a-data-only-iphone-plan-for-20-month/2#comments
A few things changed sine that was written - nothing major - the biggest thing I noticed is that using iLiberty to do the jailbrake/unlock you need to choose the 'Unlock with 3.9FB' option - until I did that I couldn't get it to work.
Here's the other thing - it actually comes out slightly less than $19.99 a month.. I signed up using a $25.00 pre-paid, after you activate they give you a $10.00 bonus. And then you get another $5.00 if you add $100.. its not much but its 15% extra and gives a little buffer in case you want to do some voice calls or texting - its about 60 minutes worth of talking which is nice to have just in case...
Anyway - it works - I hadn't seen any posts stating whether or not it still did and I can verify it does.
Now, if I only have the nerve to try and upgrade to 2.0 and see if it stays working! (I have a feeling it won't, so I'm afraid to try...)
After not being able to get the $5.99 T-Mobile plan to work for me (because of the pricing) I went ahead and tried to get the cheapest option I could find, and that turned out to be the $19.99 Unlimited MediaNet option from AT&T.
I found all of the details here:
http://www.tuaw.com/2008/05/12/finally-a-data-only-iphone-plan-for-20-month/2#comments
A few things changed sine that was written - nothing major - the biggest thing I noticed is that using iLiberty to do the jailbrake/unlock you need to choose the 'Unlock with 3.9FB' option - until I did that I couldn't get it to work.
Here's the other thing - it actually comes out slightly less than $19.99 a month.. I signed up using a $25.00 pre-paid, after you activate they give you a $10.00 bonus. And then you get another $5.00 if you add $100.. its not much but its 15% extra and gives a little buffer in case you want to do some voice calls or texting - its about 60 minutes worth of talking which is nice to have just in case...
Anyway - it works - I hadn't seen any posts stating whether or not it still did and I can verify it does.
Now, if I only have the nerve to try and upgrade to 2.0 and see if it stays working! (I have a feeling it won't, so I'm afraid to try...)