Travel tools for the road include some of the killer apps that have driven the smartphone market, like mapping. However, the ball and chain is the cost of getting that data outside of your home market. For example, U.S. carrier Sprint currently charges a whopping $19.45 per megabyte to use its GSM data roaming agreements in Europe. At that price, one photograph sent to a family member back at home could cost you more than 40 bucks. There are alternatives, though.
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