Win a trip to Paris with Samsung
Competition ends Valentine's Day
Terms and conditions apply
Prepay Special Offers
Samsung Galaxy Young only €49.99 when you move to O2 prepay or upgrade
online exclusive
Bill Pay Special Offers
For a limited time get the Samsung S4 for free on O2 Open
Mobile Broadband Offers
WiFi Hotshots available for only €39.99.
online exclusive
More hot offers
20% off your upgrade
online exclusive
Register for Priority Moments and get 20% off your pay as you go upgrade, online
Sim Only Offer
online exclusive
Unlimited calls & texts, plus 1GB of data for just €29.79 per month when you sign up online.
€40 free credit
Get €40 free credit and 50% extra free data to surf the web with an O2 prepay dongle
Freedom Anytime
online exclusive
Get unlimited calls, texts & 1GB data when you top by €30 per month.
€50 off iPhone 5C 32GB
online exclusive
Get the iPhone 5C 32GB for only €80 on our O2 Open Plus plan.
Students and staff only
Students and 3rd level faculty members get can avail of 1/2 price internet with O2 and HEAnet.
Switch in 3 easy steps
Choose a phone or sim
Buy a new phone or choose a sim card if you are happy with your own phone
Order online
Pick a date for switching your number when you're ordering
Welcome to O2
Online Exclusive Clearance Event
Incredible offers on top smartphones, available for sale exclusively online. These phones are reduced to clear but are brand new, unused and some of the best mobile phone deals in Ireland.
Don't miss out! Sign up for online offers & news
Register for Priority with O2
Get fashion. Get movies. Get meals out. Get access to your favourite gigs ahead of the pack. Enjoy the things you love for less, with Priority. We bring you exclusive discounts on your favourite brand , stores, restaurants, and lots of great competitions.
Are you a business customer
We have a special offers page that's tailored for you and your business.