OK now I really confused
According to Apple's website the iPhone 5 Model A1429 supports 1: 2100MHz, 3: 1800 MHz and 5: 850MHz.
I understand that 3 uses the 1800MHz and 800Mhz bands.
However, it looks as though some people in the UK seem to be able to use their iPhone 5 on the 3 4G network. Please can anybody confirm this and/or clarify the situation for me (OS and carrier settings useful).
Regarding using iOS7, I have this on my iPad R Mini and as I said before, I really don't like it. In addition, I listen to audiobooks, mainly on my phone, and the iOS7 Music app does not support chapters while iOS 6 does. I realise that when I upgrade my phone I will lose this facility, (unless Apple reinstates this with iOS8, which seems doubtful as they don't even acknowledge the limitation), but until I do, I prefer to keep functionality with iOS6. Having experienced iOS7 on the iPad, I can say there is nothing I miss when going back to iOS6.