iphone 4 upgraded with siri installed perfect condition .

I have a fully boxed iPhone 4 in perfect condition comes with charger ear phones lead and manual the iPhone 4 is jailbreak and locked to o2 network to get unlocked be 15 pounds from o2 this iPhone 4 is upgraded to siri just like the 4s with speech commands also as 16 gb memory selling for 280 bargain price no time wasters only genuine callers and no one overseas to contact me as will not replay