£10 minimum top up required to fully activate and lock in the tariff.
Credit rolls over until used just ensure to make a chargable call or text at least once in any rolling 6 month period.
Up to 10% of your top-ups returned if you join O2 Rewards.
* Please Note: These cards are only for distribution in the UK and must not be distributed or sold abroad, for sole use abroad. They can be used abroad by tourists from the UK(Roaming charges apply)