I never meant to leave Telefonica-owned O2. I was happy with the UK’s original iPhone network, but moved to Vodafone as I didn’t see why I should pay more for the iPhone 4. It was a big mistake, as I blogged in 2012. I have found Three excellent for data, but hopeless for voice calls, even in London.
Time will tell if I have found the best network. We rely so much on our smartphones that good voice and data coverage and performance is crucial. But at least a midi device means you have an alternative signal for data should your phone network let you down when you’re surfing the mobile web.