The UK regulatory agency Ofcom has released maps detailing the 3G coverage for the UK. The maps show that users traveling anywhere with a topology that isn’t smooth and flat are out of luck.
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In other words, that 3G modem in the highlands isn't likely to work. The release of the coverage maps comes as a result of a Freedom of Information request lodged by Simon Fluendy who claimed the regulator didn’t have a map.
The request also asked for 2G coverage maps, which were not provided. I guess Ofcom figures that UK mobile users don’t care about 2G coverage.
Via The Register