Originally Posted by
tev9999
I'm not expecting great data, but my research looks like Vodafone has the most slow coverage. I also have a paper map, and no appointments to worry about being on time for.
In addition to roaming on vodafone, I had a second iPhone with a 3 (three.co.uk) SIM in it and that was much better, reasonable coverage in most places and a minimum of 3G, not 2 or 2.5G anywhere. It's only an iPhone 4 so I don't know if I would otherwise have got LTE