As O2 is becoming Three, O2.ie will be offline for 13 hours from 6p.m. on Sunday March 1st. Your MyO2 account and all its features will be automatically moved to Three.ie; so there's nothing you need to do. You'll soon be able to manage your account, upgrade, send webtexts and find the latest smartphones & deals on Three.ie. Sorry for the inconvenience.
If you are looking to pre-register your interest in the HTC One M9,click here
Bill customers can just press *111# and the call button on your handset to show how many units you've used, or *101# and the call button for your unbilled amount.
why not use our freephone number 1909(1850 601909 from a landline) and choose option 1
It's 1909 and follow options 2,2 and 2 again
Prepay customers can check their balance by dialling *100# and the call button.
If you have a top up voucher you can apply it by calling 1744
If you have an urgent query, please use the Web Chat function on this page and one of our agents will endeavour to assist you.
This service is available from 7am to 10.30pm Monday to Saturday, and until 10pm on Sundays