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I live on Stronsay, Orkney. The nearest mobile phone tower is on the island of Sanday, about 7 miles away. I can get a signal on my mobile about twice a week and that's usually just enough to receive a couple of texts. There is a new mobile phone tower under construction as part of the emergency services network, apparently that's run by EE. I wonder if Vodafone could add a couple of aerials on that tower?