NewsFactor - In what could be the first phase of a transformation in the way its smartphone users pay for Internet use, the nation's biggest carrier, Verizon Wireless, has introduced prepaid data plans. The no-contract plans, which go into effect Sept. 28, offer unlimited 3G access on select handsets for $30 per month, or $10 per month for 25 megabytes, with a 20-cent charge for each additional megabyte.

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