Saw this on the news and thought it actually seems a pretty accurate representation of the mobile network from my own use.
http://www.bbc.co.uk/news/technology-26546100
Vodafone really need to up their game.
http://www.bbc.co.uk/news/technology-26546100
Overall performance (out of 100)
EE - 84.6
Three - 73.5
O2 - 66.5
Vodafone - 52.4
Vodafone really need to up their game.