Prepay still matters in Ireland, especially for people who want control and no credit checks. The best prepay choice depends on whether you need unlimited data, international minutes, or simple local top-up convenience.
For heavy data with no contract, Lycamobile and Three have strong headline bundles. For post-office convenience, An Post is straightforward but 4G only. For supermarket users, Tesco prepay can work, but Clubcard and plan complexity need attention.
Best prepay value by use case
Lycamobile is strongest for international call patterns. Three and Vodafone are the direct MNO prepay options: Three Super Surfer is AYCE 5G at €20, and Vodafone Data Unlimited 5G is €20 on a 28-day cycle with 45 GB EU roaming. Tesco is useful for shoppers who already use Clubcard discounts. An Post is simple for in-person top-up.
| Provider | Plan | Price | Key point |
|---|---|---|---|
| Lycamobile | Ireland Plus | €9 (28-day) | 30 GB with international-focused options |
| Tesco Mobile | Prepay Data Plus | €15 (28-day) | 100 GB + minutes on Three network |
| Three | Super Surfer | €20 (28-day) | AYCE 5G prepay direct from the MNO |
| An Post | Prepay €12.99 | €12.99 (28-day) | 50 GB and post-office top-up access |
Read the unlimited prepay small print
Not all prepay unlimited plans behave the same. Lycamobile Unlimited Plus and Go Unlimited include 100 GB at full 5G speed, then unlimited at 256 kbps. Three prepay unlimited options do not show that same 100 GB speed step in our listed plan notes.
An Post has unlimited data at €18 on Vodafone radio, but no 5G. For people who need 5G performance, that is a meaningful trade-off.
Tesco and An Post: convenience vs speed
Tesco prepay works for households already tied into Clubcard habits. The best-value prepay offer there is usually Data Plus at €15, while 5G options often sit around €20 unless discounted.
An Post is about convenience. You can top up at any post office and avoid app-heavy account management. The price is that plans are 4G only in our dataset.
How to pick a prepay plan
- Check cadence. Most prepay plans are 28-day, so yearly cost is roughly 13 cycles.
- Check network and speed mode. Host network quality matters more than brand familiarity.
- Check whether "unlimited" is speed-capped after a threshold.
If you later move to SIM-only but keep your number, see how to switch mobile.
Keep reading
- Best mobile in Ireland: full ranking, intro vs thereafter.
- 48 vs GoMo vs Clear: the €12.99 unlimited three-way.
- How to switch mobile: keep your number, cooling-off, ETFs.
- MVNO explained: who rides which masts.
- Find your mobile: 30-second quiz.
