Segments From This Episode

• 4G networks don’t exist. Or do they?

  by Molly Wood

  This week, T-Mobile started advertising that it has the nation's largest 4G network. Meanwhile, Sprint, for a while now, has said it has the first wireless 4G network. Verizon's been talking up their 4G too. And it all sounds very attractive if you've been using a 3G network all this time. But what's the difference between a 3G and a 4G network?

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