iphone 4 black 16 gig first £150 no offers ?

please read add before calling i have a 6 month old black 16 gb apple iphone 4 in mint condition problem is its locked to optus virgin australia it needs unlocked phone is jailbroke and everything else is working the best just cant make calls yet as stated above phone is jailbroke so free apps free music 16 gig of storage hd camera music player fast internet browsing via wifi all working perfect its actualy a very handy tool to have just cant make a call im asking one price and one price only 150 no offers i can get 200 on ebay please understand this before calling charger not included thanks