you really should let verizon know you are now the owner of that phone not the last guy, and he sold it to you. That way if he calls verizon and says" oh no someone stole my phone, i need a new one!" You dont get screwed with a banned esn for a" stolen" phone.When I bought a maxx off craigslist, I just swapped my sim card from my regular razr to it and didn't have to notify Verizon or anything, it just worked. As long as you got the sim from them for your account/phone, it should work in whatever phone you put it in.
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