Most of the new gen phones run far more efficient on WiFi than on 3G or HSDPA. If the carriers just spend a few bucks on a campaign promoting it, then their problem will be solved. Most smartphone owners have WiFi at home and quite a large percentage have a guest network at their work. If you run WiFi at these two locations, it is to improve your own battery life and the suggested mobile data limits are all of a sudden acceptable.
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