I’m on O2 Ireland prepay.
Apart from o2′s text bundles, they don’t have much going for them. Or that’s what i thought.
I’ve just discovered a new feature on o2.ie – the ability to add 3 friends to a list and get 1c calls in the evenings and weekends 
You can also change your status online to either ‘early bird’ or ‘night owl’.. ‘early bird’ being cheaper during the day, dearer at night, ‘night owl’ being the opposite.
As i really only ring 2 or 3 people max, it’ll save me an absolute fortune in the long term 
If i was a really penny pincher, i *could* buy another sim card, register it for the ‘early bird’ package and get 1c calls to 3 different numbers during the day 
Great news for all pre-paid O2 Ireland customers 