
06-18-2009, 04:03 AM
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What's Jailbreak?
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Join Date: Jun 2009
Device + Firmware: iPhone 3G v3.0
Location: UK
Posts: 7
Thanks: 0
Thanked 2 Times in 2 Posts
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I've managed to get tethering working on Orange UK (legit unlocked 3G) by making my own mobile config file. To clear up the question about extra charges, that very much depends on the mobileconfig file itself and whether your carrier has a separate apn for tethering.
I think that carriers are setting up new APNs specifically for tethering, so that they can monitor and charge for tethering, independantly from MMS and GPRS/3G access. I think that is what AT&T and O2 UK are planning to do.
As I'm with an unofficial carrier (Orange UK), there won't be a tethering specific APN, so using the mobileconfig file, I can tell the iPhone to use my normal data plan APN for tethering.
I believe having looked at 1 or 2 of the files at help.benm.at that, that is what he has doen to enable tethering. That is why, even though the likes of AT&T say they don't support tethering yet (as they haven't gone live with the new APN to monitor and charge for it), you can get tethering to work. I expect once they do go live, they will force a mobile setting update, and will probaly overwite the mobileconfig files, to force you to use the new APN settings. That isn't to say, you can't overwite the old ones back, but do so at your own risk.
As for cost, of course if you use tethering a lot, your bandwidth usage is going to increase on your normal data plan. It may eventually be cheaper to use the official tethering APN once it goes live, but in the meantime, using tethering is going to cost you the same as mobile browsing on 3G/GPRS on the iPhone costs you now.
This is not gospel, its just my understanding of how its working.
Now if I could only figure out why MMS keeps failing...
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