I purchased a samsung galaxy s3 on Ebay a couple of months ago. I am new to android also. I originally wanted to buy the phone and try to unlock it to use with a prepaid phone card. However, I finally found help with that and it can't be done I was told because it is a SPRINT phone. After finding this out and to avoid losing the money I spent for the phone. I took the phone to sprint and asked them if I could use it on their no-contract plan. Sprint told me I had to purchase the phone from them in order to do that! Then they asked me where I got the phone. I told them I bought it on ebay. They said they would check the #'s on the phone to see if it could be activated at all. The answer was NO, it has an unpaid balance on it. They told me I can't use it at all until that balance is paid in full. So I filed a complaint on the guy that sold me the phone on ebay because he refused to refund my money. I lost the case and am stuck with a $350.00 phone that can only be used as maybe wall art. Does anyone know of anything else I can do to use this phone?? I am very, very angry at ebay and can't believe they decided in this guys favor because as they said his description was accurate and I didn't know enough about the phone to ask about the ESN........HELLLLLP???