Apple Iphone 16gb Black Vodafone - No service! .

> I have iphone 4 black 16 gb no service in good condition > Ibought the phone over gumtree and payed 275 which I opened and the phone has no service. > The phone is in working condition and can be used as an Ipod for music and apps can be downloaded, just no calls can be made or recieved. >I am happy to recieve offers. Thanks for looking.