white iphone 4 16gb on 3 network and black 32gb unlocked -

i have a white iphone 4 on three network mint condition comes with box and charger works perfect. selling due to upgrade. or a black iphone 4 unlocked with box and charger mint condition with warranty until jan 2013 works perfect 280 for the white 16gb one or 330 for black 32gb. white one is on three and black one is unlocked. call or text 07968587858. i am based in mile end/ stepney