A SIM Only deal means only paying for your minutes, texts and data.
A contract that includes a new or upgraded phone means you will pay for the full cost of that phone (or more) by the time your contract ends.
SIM Only deals don’t include this extra cost so, if you already own a phone, you can save hundreds of pounds a year by switching to SIM Only.
SIM Only deals can be pay monthly or pay as you go. If you use your phone a lot, pay monthly is usually the better option. Pay as you go is ideal for modest phone use – saving you money and giving added flexibility.