Wi-Fi married to a cellphone would surely be a union made in heaven—a wedding of cellular's ubiquity to the high data rates of local-area networking. It would minimize expensive cellular minutes, replacing them with free or cheap Wi-Fi time. Often, too, it would yield a higher-quality call, because cellular coverage is usually weakest where Wi-Fi excels—inside homes, stores, and offices. Walking inside while in the middle of a cellphone conversation, you wouldn't even notice as your handset switched seamlessly to Wi-Fi; and when you went back out, it would revert to the mobile network just as unobtrusively.
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