Bring it into a Carphone Warehouse store (for some products it's quicker to go straight to the manufacturer).
Trade in online, over the phone or in store.
Whatever your delivery question, here's the answer.
If you're changing network, you need to contact your current service provider and ask them for a PAC (Porting Authorisation Code).
Something not quite right? Let's see how we can help...
Find out what reception is like where you live - we've got all the networks covered.