If I unlock my iphone 4 can I switch it to any company?

I'm on a Verizon account with my step dad & I want to switch to sprint. If I unlock my phone can I switch it to sprint even though its a Verizon phone? & another question, if I'm 19 with no credit but work history how much will my sprint deposit be at my nearest local sprint store?

NO. The Verizon 4 will only work on Verizon, unlocked or not.

You won't have a deposit!

No you can't.

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