You have two options. First, you can contact the seller and ask him or her to resolve the iCloud activation lock status by following these steps: 1. Sign in to the iCloud website with their Apple ID and iCloud password. 2. Go to "Find My iPhone." 3. Click "All Devices" at the top of the screen. 4. Select the device that they want to remove from their iCloud account. 5. If necessary, click "Erase [device]." 6. Click "Remove from Account." After the previous owner takes these steps and removes the device from their account, turn off the device and then turn it back on to begin the setup process. Of course, if the person who sold you the phone was not the legitimate owner (i.e., if the seller stole the phone), they won't be able to help. In such a case, you might try an iCloud unlock service. If they can't help either, I'm sorry to say this but you are out of luck. I don't know of any other iCloud bypass tools. It's my understanding that there is no alternative method for bypassing this security feature. Your second option comes into play if you bought a new phone from an authorized source (i.e., an Apple Store). In this case, you can contact Apple Support, submit your proof of purchase, and Apple will unlock the phone for you.