Question: how to check your data balance on eir?
Answer: Ways to check By phone: Freephone 1742, and then follow the instructions. If you're on a top-up offer and want to know how many days are left, text 'offer' to 50104. If you just want to know your data balance, you can text 'balance data' to 50104. You can also view your credit balance in my eir.