There are two types of deals in the market. One is the Contract deals wherein the users need to pay monthly bills and also have to sign a contract for a specific period of time. It may last for 12 or 24 months. The other option is pay as you go mobile phones deal which is different from first option as here the customer need to pay before making calls and no signing of contract is required. It's useful for those who want to keep a track of their phone expenses. Almost all network providers like Vodafone, T-mobile, Virgin, O2 and Three are offering such deals. Go and choose one for you now.