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What are 4G phones and how are they different from 3G phones?

I have used cell phones for years an recently upgraded to an iPhone (this is my 1st attempt at posting to HubPagrs from it) &still don't know what the G stands for. A banner at the top of the 1st page of today's Wall Street Journal says "What Exactly Is 4G? Walter S Mossberg Explains". I didn't have time to read the article but figure I must not be the only one who doesn't know this

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kschang says

4 years ago
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