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Terms & conditions

SIM Only Pay Monthly Offer

If you’ve received a text message from O2 with details of a special SIM Only offer for you, this page gives you all the information about it that we couldn’t fit into a text message.

Each year your Sim Only Pay Monthly plan will be adjusted on your April bill by the Retail Price Index (RPI) rate of inflation announced in the preceding February. Find out more at

Existing O2 Pay As You Go customers only. Extra data applied for up to the first 12 months or until you change tariffs or leave. 12-month minimum term contract. Selected tariffs are only available to buy via telesales, in O2 stores or the specific online link. Not compatible with other airtime discounts or data offers. Allowance includes Europe Zone data only. UK calls/texts to standard UK landlines and mobiles and when roaming in our Europe Zone. Fair usage policy applies. Special and out of bundle numbers are chargeable. Connection subject to status and payment by direct debit. 18+. Handset not included. Non-O2 phones may need unlocking. Terms apply, see