(Credit: Nokia) We’ve all heard the horror stories of people being charged thousands of dollars in a single month after using their mobile phone data without knowing how much it costs in advance. The rise in popularity of excellent web browsing handsets has all but replaced the question, “Do I need mobile data?”, with the more frustrating question… “How much data do I need?” Trying to add up your potential data usage may seem like a nightmare, so many people fork over large wads of