i phone 4s swap with 5 !

hi i got i phone 4s white still 2 month warranty from apple the phone factory open so use can use any sim card phone come with box all original accessory i never use head phone or charger still in box 4s phone i just replays from appeal so phone is brand new i am looking for i phone 5 white or black i am use t mobile let me know how mach i pay to swap call on 07966868974