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?