hello

hiya my name is david cini this is my old iphone4s aacount ive bought an iphone 5 from a 2nd hand phone and i cant actavite my phone coz it says i need the ownners appple ID and Password but i dont know him so i wounder if u can help me coz it cost me £210 and i cant use it so is there any chance to reset the phone if u can thanks u