Barence writes: "When choosing a new phone tariff, how do you know how much data is enough? It's a dilemma most of us face every two years, so PC Pro took a two-pronged approach to answering the question. First, they tested some of the most commonly cited data hog apps to see just how quickly they can swallow your allowance; second, they asked 100 readers to track their 3G and Wi-Fi usage to find out how much data people actually use. The results should help you make your next choice.."
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