Speaking at a J.P. Morgan Conference, Verizon Wireless CFO Fran Shammo revealed that the carrier plans to transition its grandfathered customers off their unlimited data plans, says a report in Fierce Wireless. Shammo confirmed that, starting this summer, customers moving from a 3G phone with an unlimited plan to a 4G handset will be required to drop the unlimited plan and sign up for a shared family data plan.

According to the report, Verizon will only offer a shared family data plan for its 4G customers. These plans include one bucket of data which is shared among multiple devices. This change will affect customers upgrading phones, but the report did not say what would happen to current 4G customers on an unlimited plan or unlimited 3G customers who don't want to upgrade.

[Via GigaOM]

*Verizon is currently in the process of acquiring AOL, Engadget's parent company. However, Engadget maintains full editorial control, and Verizon will have to pry it from our cold, dead hands.

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