Best eSIM for Ireland

Eir is the network available to eSIM visitors in Ireland and delivers 5G across Dublin, Cork, Galway, and Limerick. The carrier's 4G footprint covers all major motorways and intercity rail lines. Signal in coastal towns along the Wild Atlantic Way is generally solid, with the most notable gaps in the outer Aran Islands.

Eir delivers reliable 4G and 5G signal across Dublin city center, Cork's city core, and the Galway urban area. Dublin Airport (DUB) and the M50 motorway ring have full 5G coverage. The west coast from Westport to Dingle maintains 4G in town centers. The one real limitation: offshore islands such as Inis Mor drop to 3G or lose signal on ferry crossings. EU roaming is included on all plans, which matters if you cross into Northern Ireland.

Activate your e-sim at least one hour before your flight lands at Dublin Airport (DUB). Scan the QR code in your carrier settings on any unlocked iPhone XS or newer, Pixel 3a or newer, or Galaxy S20 or newer. Your device registers on Eir automatically at arrival. Note that Northern Ireland uses UK networks, not Irish ones, so EU roaming rules apply when you cross the border.

Google Maps is the workhorse app in Ireland and uses roughly 100 MB per day for active navigation. The Transport for Ireland app pulls real-time bus and Luas tram data at about 20 MB per day. Add 150 MB per day for Instagram and light social media. A 5 GB plan at $9.49 covers a typical 10-day holiday without video streaming. Step up to 10 GB at $16.99 if you plan to use your phone as a mobile hotspot.