I'm sorry VIP King, but I haven't responded to your post because I don't really know the answer myself.
I was in your boat three months ago. Frustrated beyond belief and even last weekend, when I was trying to get Push Notifications to work. Its unbelievably complex and the internet (in the English speaking world) doesn't have the pure answer for you.
With that said, most people don't use Docomo with their iPhone. Its extremely expensive with the data plan. YES, I'm serious, the Docomo data plan is very expensive compared to Softbank, because so far, I haven't been able to get Biz Hodai to give me a cap. Their servers evidently see my iPhone as a computer, and charge me tethering rates.
Recently, (about a month and half ago), I signed up for a Data only aircard. I thought I was being smart because I could use the aircard sim in my iphone and pay only ~¥7,500 instead of ~¥13,000 a month for data (the sim chip from the demo aircard model in the docomo store did work perfectly in my iphone). But now, I have the same issue that you're having. When ever I use the aircard sim in my iphone, it connects to Docomo, but every apn that I've tried doesn't work. I have a username and password because I have a MoperaU account, but I still have had no luck. Maybe the answer is out there (infact, I'm sure it is), but I don't read and write Japanese, and the Docomo reps are not going to help me on this one.
So, unless I something miraculous happens, I've come to a very sad and depressing decision. I'm going to have to give up the iPhone on Docomo and use a standard Keitai. I really dislike them (after using the iphone for 2 1/2 years). I should of bought the Andriod when I signed up for Docomo service instead of a Japanese Keitai. I was blinded by the TV function, doh.
Okay, but about your issue. Just PM me, and we can talk. I am confident that you can get your iPhone working on Docomo. But you might have to give up your BB data line. More than likely, the Docomo servers are blocking your phone because it's not a BB. If you have ideas on how to spoof the networks to think otherwise, I want to know how. Cause I have an idea on how to use the iPhone on the Biz Hodai plan disguised as an HTC.
But I distinctly remember the rep at the Docomo store (we're friends now) telling me that BB's are on different data plans from the windows smartphones and HTC android phone, and that if I wanted to use my iPhone on the Biz Hodai plan, I can't buy a BB, it wouldn't work.
I hope that helps. Sorry if its still vague, but I don't have a BB data plan with Docomo. But I do feel your pain and major frustrations, as I'm trying to get my iPhone on their data only plan, and its not working.







