| Right - finally something I can post with authority on!
3 is a 3G network but the handsets are dual-mode, which means they will run on the GSM network when you don't have 3G coverage. There have been problems historically over handing a call over from 3G to GSM which led to the call being dropped. This is largely over now with the introduction of the latest handset. Ironically, when you don't have a 3G signal, your calls will be routed over O2's network so your coverage will be the same as you currently have (if not better).
There are two Nokia handset available on 3 (the 6630 is rated by several European mobile phone CEOs as the best 3G handset out there but it looks a bit like a willy. The 6680 is a bit more normal looking).
Note that the £15 is only for the first 6 months and will revert to £30 after, and you are tied to an 18 month contract so it is equivalent to £25/month - still pretty good though.
Don't be tempted by the super cheap contract that gives you the LG U8130 - it is not a very nice phone and your mates will laugh at you.
Everybody that is out of contract should contact their service provider, even if they are happy with the service - these offers are pretty much available to everyone (I'm assuming if you own a duke then you probably have decent credit) but they don't publicise them. There is a price war coming in the UK and consumers should take advantage of this.
happy to answer any questions you might have after this.  | 
Hybrid Mode
