You don't get 4 Hype?
Here in Australia, we have already turned off GSM and rapidly moving to 4G ubiquity. 4G gives you VOIP calls in HD, [quite noticable] faster setups to ring on the other end. Stonking quick internet with good upload speeds. In the UK I'm not surprised you can't see a reason, your networks seemed to be tied together with baling wire and string. Even Vodafone the poorest telco in Australia has great speed internet but with a much lesser footprint. Here in the antipodes we watch on and shake our heads where one would expect a great mobile network for a small, fairly densely populated country we see steam punk powered GSM. BTW 5G has been demo'd by 2 out of 3 telcos here. you people should be camping in MP offices demanding better