Are there prepay SIMs with unlimited data?
Yes, most major providers in Ireland offer prepay SIM deals with unlimited data. In fact, unlimited data is much more common on the Irish prepay market than in many other countries. This gives you plenty of options, making it easier to find a plan that fits your specific needs without being tied to a long-term commitment.
You might prefer the flexibility of a “no-strings-attached” mobile solution, and in that case, a prepay SIM is often a better choice than a bill pay contract. While contracts sometimes offer extra perks, the value found in Irish prepay deals – especially with uncapped 5G speeds – is often hard to beat. We recommend comparing both prepay plans and SIM only deals with unlimited data to see which option gives you the best bang for your buck.
How does a prepay SIM with unlimited data work?
A prepay SIM with unlimited data is a flexible alternative to a SIM only contract. You simply top up your credit in advance (usually every 28 days) to activate your plan. Once the period is up, you can choose to top up again to renew the same plan or switch to a different one if your needs have changed.
Prepay deals with unlimited data almost always include unlimited minutes and texts to any Irish network, and by 2026, high-speed 5G (and often 5G Standalone) is standard across nearly all Irish providers.
With most Irish networks, EU roaming is included as part of your top-up. However, the terms vary between providers, so it’s important to check the specifics. Even with “unlimited” data at home, there is always a fair usage policy (FUP) that limits how many gigabytes you can use while roaming in the EU.
How much does a prepay SIM with unlimited data cost?
A prepay SIM with unlimited data in Ireland typically costs between €12.99 and €30 per month. Many providers offer “introductory” deals for new customers or those switching from another network, which can lower the price for the first few months. While some premium plans can be a bit pricier, the competition in the Irish market keeps rates quite competitive.
It’s always worth comparing the latest offers – feel free to use the table at the top of the page!
Which is the cheapest prepay SIM with unlimited data?
Eir Extra is the cheapest unlimited data prepay deal right now (checked on 29/09/2026). Top up from €0.00/month for 1 months, then €20.00/month.
Which is better – unlimited prepay or unlimited SIM only?
The answer depends entirely on your lifestyle and budget. If you want maximum flexibility, no credit checks, and the ability to change your plan whenever you like, a prepay SIM is the way to go.
However, if you want to “set it and forget it” without worrying about top-up dates, or if you are looking for specific “loyalty” perks that only come with a monthly subscription, a bill pay SIM only plan might be the superior option. That said, in Ireland, the gap between prepay and bill pay value has narrowed significantly, with prepay often offering the same 5G speeds and data allowances.
Frequently asked questions about unlimited data prepay deals
In Ireland, the validity period depends on the provider. The major networks typically operate on a 28-day cycle. This means your “unlimited” benefits expire every 28 days, requiring a new top-up. Smaller providers usually offer a full 30-day or calendar month validity, which can be more cost-effective over the course of a year.
Yes, thanks to EU “Roam Like at Home” regulations, you can use your data in the EU and EEA at no extra cost. However, it isn’t “unlimited” while abroad. Every provider has a Fair Usage Policy (FUP) for roaming – for example, a plan with unlimited data in Ireland might only allow 20 GB or 30 GB of usage while in Spain or France. Roaming outside the EU (like the USA or Australia) usually requires separate credit.
Compared to many other countries, getting high-speed unlimited data on prepay in Ireland is actually quite affordable. You can find “budget” unlimited plans starting around €12.99, while the most expensive premium prepay plans rarely exceed €30.
In 2026, almost every unlimited data prepay plan also includes unlimited calls and texts to all Irish mobile and landline numbers. Some very cheap plans might limit these to “weekend only” or “on-network only,” but the standard deals from most providers cover all national calls and texts.
Yes, 5G is now standard for prepay customers in Ireland. Whether you are with a major carrier or a smaller MVNO, you will typically get 5G speeds included at no extra cost, provided you have a 5G-ready phone and are in a coverage area.
While marketed as “unlimited,” most providers in Ireland have a fair usage policy (FUP) in place. On many high-end plans, this limit is set as high as 1 TB or 2 TB, which is more than enough for even the heaviest users. However, some more affordable or “value” deals might have a lower threshold, typically ranging from 300 GB to 500 GB. If you happen to exceed these limits, your provider reserves the right to slow down your connection (throttling) or reach out to you about your usage
Yes, most Irish networks allow tethering or personal hotspots on prepay plans. This is a very popular way to get internet on a laptop or tablet using your phone’s data.
Absolutely. You can port your number from any Irish network to another. When you order your new prepay SIM, you simply select the ‘port your number’ or ‘keep your existing number’ option. The process is usually completed within a few hours, and you won’t lose your service in the meantime.
