Cannot activate cellular data network - iOS flaw

After over a week of chasing down this problem since getting my new iphone5, I have come to the understanding through research and discussing with Apple Genius Bar that there is a significant flaw in the itunes / iOS ecosystem when restoring old backups during an upgrade process.
I started with a happily working unlocked iphone4  which was dutifily backed up before I trundled down to the Optus shop for a new iphone5. Got my new i5, bought it home and started the restore process. This was when my week of pain started. Everything worked fine and all data and contents came across. I just couldn't establish a cellular data connection. Internet through wi-fi was fine.  After spending countless hours on the phone with the telco (with at least 8 reboot/reset network settings/etc), two new sim cards and one replacement phone, I discovered that the issue was none of these. The problem only exhibited itself after restoring my old backups. If I fully reset and deleted everything on the phone, it worked and I could establish a 3G connection.
After another long chat with Apple at a retail shop and an appointment at the Genius Bar, the answer is - Bad luck, you have to set up the phone from scratch and lose all your data that wont sync across from itunes.
I was a bit miffed at this and started some research across the communities and noticed I am not the first to strike this issue. Surely there must be a way to recover some of the information without causing the phone to stop working with 3G data.  The Apple tech told me to investigate 3rd party options as Apple do not provide the tools to do this.
Interestingly, the Apple diagnostics tool that was run on my old iPhone4 to determine if there were corrupt apps or data that may have been backed up only indicated that the iTunes Store app had been troublesome.
Poor user experience from this Apple product (iPhone 5). All my other purchases/upgrades have been seemless and worked out of the box.

unlockediphone4s64gb wrote:
Is this an issue (or related) to the sim card issue?
Could be, but I'd first suggest restoring the phone, as you are now doing.

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    Message was edited by: r.spiroski

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    Message was edited by: modular747

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    All iPhones sold in Japan are sold carrier locked and cannot be officially unlocked by the carrier. If you unlocked it, it was by unauthorized means (hacked), and support cannot be given to you in this forum.
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    Message was edited by: modular747

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    All iPhones sold in Japan are sold carrier locked and cannot be officially unlocked by the carrier. If you unlocked it, it was by unauthorized means (hacked), and support cannot be given to you in this forum.
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    Message was edited by: modular747

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