Use 3GS on AT&T with no data plan?
I started on AT&T with a dumbphone with data/texting disabled (kids kepts hitting it on accident). Then I got a used 2G. With your help, I jailbroke/unlocked/hacktivated it, and use it with no data or texting plan, effectively making it an iTouch that can also make voice calls. It's worked pretty well.
Now, I received a hand-me-down 3GS for xmas, and I'm working on trying to get to the same state I'm at now (no data plan) but with the better phone.
It's been a while since I jailbroke the 2G, and from what I've read it's trickier to JB newer phones/OSes the right way. At present the unmodified phone is running iOS 5.01, have the "old" bootrom, and have baseband 05.16.05. I have downloaded the IPSW for 5.01 and the latest redsn0w. I'm willing to run iOS 4.x if that would make things easier/better.
My questions are:
1. Do I need an unlock and/or hacktivation to get to no data plan on AT&T from my current state?
2. Will GPS work without a data plan? (I assume it won't if I do need an unlock as the iPad doesn't support GPS, right?)
3. Anything else that might not work? (Push notifications don't work on my current phone due to the JB, and YouTube required a little work to get running.)
4. I see there were some developments in JB right around xmas. Would it be wise to wait a bit longer and see how it all plays out?
Many thanks in advance for your expertise!