Can i sue someone who sold me an icloud locked iphone with out informing me about it?

So today i bought a second hand iphone from this guy in craigslist and i ask him through in person if everything on it was clean like the esn and if its blacklisted and if it had a icloud lock and he said everything was good. That nothing was wrong with it and that it was ready to be activated after i bought it and noticed that it was icloud locked. I saw on his craiglist post he said nothing about it being icloud locked can i sue him? I only have his number if i can sue him can you guys please tell me how i do it thanks itll mean alot i spent 130 dollars on the 4s and it really wasn't worth it since it has no worth other than it being parts thanks

You should demand your money back and if the seller refuses Yes, you have grounds to sue them. There's a legal thing called an "implied warranty" of all items sold. That indicates that an item sold must meet reasonable expectations of the buyer. If there's a dispute of how reasonable an expectation is then one can take the case to court and a judge will decide. No judge will say an unusable iphone meets reasonasble expectations unless there were disclaimers of the defect.

Call cops report it, hope you learned a lesson

You should have checked that before paying him. You could tell him you are filing it in small claims court unless he gives your money back, maybe he will refund you. I think you can also file a police report with the phone number.