Can the Xperia X10, when unlocked be used on an existing verizon

PLEASE123

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Sep 26, 2010
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I have a 2yr contract with Verizon Wireless, but I am interested in the Sony Ericsson Xperia X10 for AT&T, I saw some unlocked ones online if I bought one would I be able to use it with my existing account? and if so would it still have all the features such as timescape and all that good stuff?

also, is it legal and should I let the Verizon people know it's an unlocked Xperia X10 that I will be using instead of my Verizon phone? lol might be a dumb question

Thanks