Keeping O2 Ireland SIM active without any credit

[drama queen]

Originally Posted by NFH

I have an O2 Ireland SIM which currently has no credit. I'd like to keep it active, particularly as it has a memorable number. However, I don't want to add €10 of credit. Is there any way of adding a smaller amount, maybe just €1, so I can receive a 1-second roaming call every 6 months?

Get a free Meteor SIM and port your number over to Meteor. Meteor allow you add just €5 credit minimum. They also allow you to receive free incoming calls anywhere in Europe - so, unlike O2, it could be worth your while keeping a Meteor SIM alive when you are travelling elsewhere in Europe.