Reactive SIM

[Charlie22]

I’ve been abroad for a year but now need to use my O2 pay and go sim - can I reactivate?

[Enlli]

You can try, but there is no guarantee and chances are slim.

Guide: How to find help & contact O2 

[TallTrees]

PAYGO sims

need to be reasonably active

1 chargeable telephone style call not text every 3 months and a top up 1 year-ish

Try your sim otherwise it is a new one.

Good luck