samsung galaxy s2 swap for galaxy 3 !

i have samsung galaxy s2 black unlocked to all network upgrade android 4.0.3 have some singe from daily used but no any scratch on screen the phone working perfect,, i like swap this phone with samsung galaxy s3 unlocked to any network plus money on top my phone to you ,, if you interested text me how much money you want on top my phone ,,,,, thx