I recently purchased a 64GB/3G iPad and had a 3G problem after jailbreaking. I had only used it a day before the break so I didn't know if it was jailbreak related or not. I came across a post elsewhere describing the same problem but do not know if that person had jailbroken their unit or not.
My response is below. I would appreciate hearing from anyone who has had similar 3G problems. I was lucky and made an exchange to get another jailbreakable unit.
I have an ipad & wanted to ask if anyone was experiencing poor 3g reception? I have found that in more and more situations where I can get "no service" and yet the iphone users are OK. It happened again last night, I was sitting in a classroom and getting "no service" and five iphone users were all rolling right along with web access. I've got a work friend who has the same problem with her ipad/iphone situation.
I have had the same experience and wondered if it had anything to do with a jailbreak. Had you jailbroken your iPad? Here is my experience. I bought a new 64/3g iPad last week. It came with iOS 3.2. Worked okay but obviously not extensive testing. A day later I jailbroke it. Seemed fine. Then the following day I had 3G issues such as yours. It couldn't seem to hang onto it. iPhones beside me had no problem. Every time I selected the Carrier setting and it eventually tied into the network, as soon as I tried surfing it lost it. So I decided since I had no other option to put a clean 3.2.2 on it. Of course no jailbreak for it. Started working right away on 3G. So I suspected the jailbreak. Then a day or two later running 3.2.2 with no jailbreak the same behaviour repeated itself. No 3G service. Once in a while I could get it but enough was enough. I returned it to BestBuy and wanted an exchange. They exchanged it and thankfully it is also 3.2. I have not jailbroken it and will not until I do some more testing and research. I will leave it at 3.2 unbroken for a week or so and find out if it stays stable on 3G. If there is no evidence that the jailbreak contributed to the problem I will break it. Thus this long-winded message to inquire as to whether or not you had applied a jailbreak. Has anyone else experienced 3G problems pertaining to inability to stay connected? Thanks all.