How to bypass IPhone 5s Icloud activation?

I bought this phone from some guy in my school who had a Iphone 5s for $70. I told him if he jacked it from someone. He replyed "no it was my sisters, I already have it reseted so here you go." I payed him the 70 not knowing it was stolen and left. When I went back to class I tried setting it up, It showed me this, "This iPhone was lost and erased. Sign in with the Apple ID that was used to erase this iPhone. Message from Owner: This iPhone has been lost. Please call me. (***)***-****. I tried looking for a way but I can't find a solution. Please wright back with a solution how to fix this. And btw the guy never gave me back my money.

The solution is you were ripped off just like the other guy you might as well do the right thing and give the guy back his phone because its just a paperweight to you. If the deal is too good to be true its because its a lie.

Maybe hand it into a local police station, the owner might have reported it stolen and it could get returned to him that way. Definitely tell your school authorities about the situation too, to try getting that $70 returned.

I would turn him into police. Notify him you are doing so if he doesn't refund your money. I would then call the person that put the message on it, that message can't be removed by the way as he remotely did it through find my iphone as thats a security feature to be able to permanently put a msg on the screen, the phone will be useless anyways with that on there.