iphone 3gs 16gb jailbroken and unlocked on latest firmware Swap for?? !

i would like to swap my iphone 3gs for preferably a nexus s may consider other but only may I really would like a nexus s the iphone is 16gb unlcked jailbroken on latest firmware with push notification fix and can be turned on and off!! let me no what you have give me a call on 07446153740 not for sale unless you want to give me the trade in value of cex which is £153