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

12-month minimum term. Allowances 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. No upper use limit on data. Terms apply, see

If you are eligible for our 50% off for 3 months offer, then the following terms also apply: 50% discount applies to the O2 retail tariff price for a maximum of 3 months. Out of bundle charges are excluded. Discount cannot be used in conjunction with any other airtime discount. If you change tariffs or leave before the 3 month discount period has ended the offer will expire and cannot be re-instated.