Do O2 Sim Cards Expire. SIM cards are active as long as there is a balance on the account of at least 001 that matches their expiration date. Some SIMs have an expiry date so that for instance prepaid SIMs do not lay around on the shelves of shops for years and years consuming network database resources and costing support and licence fees and hogging a phone number whilst earning no revenue for an operator.

After 180 days of inactivity on your SIM card your outgoing phone calls will be suspended but incoming phone calls will still work. PAYG bundles expire after 30 days non bundle PAYG from 84 to 180 days if a no chargeable event is made depending on network or MVNO. Mobile operator O2 UK appears to have scrapped their Classic Pay-As-You-Go PAYG plans for new customers in favour of a refreshed range of Big Bundles which include unlimited calls and texts as standard.
I think its over twelve months since I last used it.
Place the O2 Sim card inside your O2 mobile phone. However some mobile phone providers will cancel your pay as you go account if you dont top up your sim for an extended period of time. Providing you do this your credit will not expire and your account will remain open. Previously customers had a selection of either the old Bundles or their Classic PAYG plans.

