IPhone 5 iOS 6.1.2 No Service bug?

Earlier this week, I updated my iPhone 5 to the newest iOS, 6.1.2. Ever since then, I don't get service almost anywhere. Before updating, I could get service fine anywhere I went in town or on my college campus. After upgrading the iOS, I can only get service in certain areas and it's really frustrating. I'm 100% positive it's the new iOS. I've tried resetting the network settings, turning on and off my phone, and hard rebooting it, but nothing works. I haven't tried a full restore yet because frankly, I'm too lazy to have everything erased and resynced back on, but I'm pretty sure restoring it won't solve the problem. Is this bug part of iOS 6.1.2? Am I the only one who has this problem? How do I fix it?

Never heard of this problem.
mine is fine on 6.1.2
I work at apple store and haven't heard of this so far.

Having the same problem

Same problem, test over router G not N.

Same problem here. I'm trying the service profile update ##873283# but its not working any more. Before it used to say update complete or update fail. But now you do it and only keeps right there on the "starting service update" and never goes to the next step. And worst of all you can't try to do it again if you don't reset the phone.

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