We all know the reasons mobile operators are rushing to roll out LTE 4G service, but there may be no real reason for customers to take it up in the short term. Yes, it's fast, but so is HSPA+ 3G with many operators reaching speeds of 21-72Mbps. Oh, and there are a lot more devices around for those 3G networks - all the top sellers are 3G-enabled smartphones. In fact, the current 3G experience is so good that, according to a Connected Consumer survey by Analysys Mason, 46 percent of iPhone 4 users...