I jailbroke using redsn0w and unlocked using ultrasn0w. Everything went fantastic until I made a call. I can not hear any noise coming from the other end. This problem is fixed when on speakerphone. It does not matter whether the call is sent or recieved from the phone. Obviously, I would like to be able to use it when not on speakerphone. This phone had no problems in this regard before I jailbroke/unlocked it.