On your first day, buy a pay-as-you-go (prepay) SIM so you have an Irish number at once, then compare plans properly with ComReg’s free tool. You can switch later and keep your number for free.
What you need
- An unlocked phone (check before you travel)
- A way to pay: cash or a card for prepay, a bank account for bill pay
- Your Eircode (postcode) for broadband and some bill pay plans
- Contract details and payment details when you switch provider
Step by step
- Get a prepay SIM first. Pay-as-you-go has no fixed term, so you can stop at any time. It is the quickest start while you wait for a bank account and address.
- Test the coverage where you live and work. ComReg has an official coverage map.
- Use your new number everywhere: job applications, your landlord, and MyGovID login codes.
- Compare plans on ComReg Compare. You can filter mobile plans by bill pay or prepay, and broadband by technology, speed, provider and contract length.
- Choose a contract type (see the table below). Read the minimum term before you sign.
- Switch and keep your number. Contact the new provider and tell them you want to keep your number. They manage the switch for you.
- Add home broadband when you have a long-term address. Check what is available at your Eircode.
Prepay, SIM-only or bill pay?
| Type | Contract length | Good for |
|---|---|---|
| Pay-as-you-go (prepay) | No fixed term, stop any time | Day one, short stays, tight budgets |
| SIM-only | Rolling monthly or fixed term, typically up to 12 months | People who already own a phone |
| Bill pay with phone | Fixed term of up to 24 months | People who want a new handset paid monthly |
Prices change often, so check current prices on ComReg Compare instead of trusting old adverts.
Switching and contract rules
- Keeping your number is free (number portability), but it is not automatic. Ask for it.
- No double billing: your old contract ends when the new service starts.
- Early exit costs money. If you leave a fixed-term contract early, an early termination fee may apply, and you may need to pay off the phone.
- Your provider must tell you when your fixed-term contract is ending and send you “Best Tariff Advice”. That is a good time to compare again.
- Unlocking is free at the end of a fixed-term contract. Ask in advance, as it can take a few days.
- Cooling-off rules vary depending on how you signed up. Check ComReg’s contracts page and your contract.
Common mistakes
- Signing a 24-month contract in your first week, before you know where you will live.
- Forgetting to tell the new provider to port your number.
- Letting a prepay SIM run out while it is your MyGovID or bank number. Update your number everywhere before you change SIM.
- Replying to “your parcel is held” texts. These are scams. Read our scams and safety guide.
Do it faster with GetKG
- English phrases for work calls and emails — feel confident when employers call your new number
- B1 English practice — understand contracts and customer service calls
- GetKG Tools — free online tools for everyday tasks
Official sources
Frequently asked questions
Can I keep using my foreign SIM?
You can, but roaming rules and costs depend on your home provider and country. An Irish number is cheaper for local calls and easier for employers, landlords and MyGovID codes.
Does switching provider cost money?
ComReg says switching generally has no charge, but check your contract. Leaving a fixed-term contract early may mean an early termination fee.
How long does a switch take?
It should take as little time as possible, and you can agree a date. If there are problems, you should not be without service for more than one working day.
Do I need broadband if I have mobile data?
Not always. If you work from home or share a house, fixed broadband is usually more reliable. Compare both on ComReg Compare.
This page is general information, not legal, immigration or tax advice. Rules can change, so always check the official sources above.
Next step: start your search for somewhere to live with our guide to finding a home in Ireland.