If you are on a budget or already have a mobile phone then why not sign up to a sim only tariff. These contracts will give you more free minutes and more free texts than on a standard plan as the network do not have to give you a free mobile phone, so they pass some of this saving on to you.

SIM Only tariffs do not include a handset. 30 days notice required for cancellation. Before you can use an O2 SIM card in your existing phone you may need to get your previous network or service provider to unlock the handset. You will need to wait until the expiry of any existing minimum term you have agreed and a charge may be payable.

Online Leisure 15 - Inclusive minutes can only be used 7pm-7am weekdays and all weekend.

Try out T-Mobile's just SIM plans which give you:

More minutes and texts than same price T-Mobile 18-month contracts
A no-hassle one-month rolling contract
The freedom to move if you give T-Mobile 30 days notice

Whether youre switching to the Vodafone network, reactivating an old phone or visiting the UK with your mobile, a SIM pack gives you everything you need to connect your existing phone to our products and services. You can also pop the card into a new handset from the fantastic range of pay Monthly phones.