Please help asap!! Important question dealing with craigslist/lemon law/cell phone?

Okay, first off I live in Florida. In Pinellas County. I posted an ad on craigslist to sell my Verizon Blackberry smartphone. This guy offered me money then asked out of curiousity why i didnt want the phone anymore. i told him it was under a roommates name and she didnt pay the bill so the service got cut off. he bought the phone with this knowledge and i have proof in a text message that i told him this information. now he is threatening to call the police. and mentioned something about a lemon law. well i tried looking it up and to what ive seen there is no lemon law for cellphones. then he said its in the fine print in craigslist and when i looked at craigslist it says they do not offer 'buyer protection'. he said its a fraud because the phone doesnt work. but the PHONE works perfectly. i told him i sold him a PHONE not a service plan. i did not at ANY point tell him he could reactivate this phone with verizon. is there any legal action he can take? i asked 2 friends, and they said no.but i wanted to ask a broader range of people.