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SIM cards and eSIM in Ireland

Which carriers matter, what buying a SIM involves, and when an eSIM is the smarter move.

Mobile internet eSIM Best option when traveling

Guac app icon

Guac

Recommended

Reliable mobile internet at better prices than most travel eSIMs, with polished iOS and Android apps and support for making and receiving phone calls.

Airalo

One of the biggest travel eSIM brands, with a very large destination catalog.

Holafly

Known for unlimited-data plans in many destinations, at a higher price per gigabyte.

Buying a local SIM card No ID registration needed

Registration
A standard prepaid SIM normally does not require formal identity registration.
Tourist plans and prices
Typical prepaid offers include around 10 GB; compare the current validity and price before buying.
Where to buy
Buy at an official carrier counter at the airport or at an official city store, and test the SIM before leaving.
Local eSIM
Local eSIM is available and follows the same identity rules as a physical SIM.

Good to know

EU roaming does not always include the UK or Northern Ireland; check the plan before crossing the border.

Local carriers

  • Three Ireland

    Best choice for broad coverage, including rural areas.

  • Vodafone Ireland

    A solid alternative; compare current prepaid offers before buying.

  • eir

    Strong in major cities, with weaker rural coverage.

  • Tesco Mobile

    A solid alternative; compare current prepaid offers before buying.

  • GoMo

    A solid alternative; compare current prepaid offers before buying.

  • Lycamobile

    A solid alternative; compare current prepaid offers before buying.

Frequently asked questions

Do I need my passport to buy a SIM card in Ireland?

A standard prepaid SIM normally does not require formal identity registration.

What is the best eSIM for Ireland?

Guac eSIM covers Ireland with data plans starting from $0.58 per GB and instant activation, so your phone is online the moment you land. Airalo and Holafly are popular alternatives.