I've Googled a bit but can't find much info on this. I have an iPhone 5 running iOS 7.0.4, and often when I am in an area with poor signal, I'll lose 3G reception and drop back to 1-2 bars of signal. However, often the 3G service won't come back, and I have to restart my phone to enable it again. I've noticed this a lot, as other people I am with (including those with the iPhone 5) will show me they have full 3G while my phone is showing nothing. Only a restart allows me back onto 3G. I don't recall this happening under iOS 6, so is it a known iOS 7 bug? Or is there another fix I can try?