Three Broadband Review Ireland 2026
Three is not fibre. It is plug-in 5G home broadband for renters, new-builds waiting on a line, and anyone who needs internet this week. The promotional 24-month plan is €25/mo; thereafter is typically €40. Speeds follow the mast, and fair-use still applies.
Three review: key takeaways
- ✓Three does not sell Open Eir, SIRO, NBI or Virgin. Home broadband here is 5G on Three’s mobile network — a router in a socket, not a fibre engineer on a calendar.
- ✓The promotional Unlimited 5G 24-month plan is €25 a month, then typically €40. The 12-month Unlimited 5G is €44.99 intro, then typically €50. No setup fee on the plans we track.
- ✓Advertised download is 500 Mb. That is a headline, not a contract speed guarantee. Real-world speed follows the mast, indoor walls, and how busy the cell is after tea.
- ✓Headline home plans are sold as unlimited. Fair-use and traffic management still apply — “unlimited” is not a licence to saturate the cell all day.
- ✓Best fit: renters, new-builds waiting on OpenPort or NBI, and anyone who needs broadband this afternoon. Weakest fit: a house that already has full fibre at the door.
- ✓ComReg Q1 2026 puts Three at 2.2% of fixed broadband lines. It is a specialist 5G product, not a fibre rival to Sky or Vodafone.
- checkFastest path from “no internet” to “online” if 5G covers the house
- checkPromotional 24-month pricing can undercut fibre intros
- checkPortable — useful between lets
- checkNo Open Eir/NBI install calendar
- closeNot a wired speed guarantee — evening cell congestion is real
- closeUpload and latency lose to full fibre for WFH video and gaming
- closeIndoor coverage can be a brick-wall problem; an external antenna is plan B
- closeFair-use / traffic management on “unlimited”
How Three scored
Six categories, scored from published prices, contract terms, coverage and technology — not invented lab Mbps.
Three at a glance
Plans and prices (August 2026)
Introductory monthly prices. Thereafter is what the same plan typically costs after the deal — the number that decides whether you stay or switch.
| Plan | Intro / mo | Thereafter / mo | Contract | Download | Upload |
|---|---|---|---|---|---|
| Unlimited 5G · 24 months (promotional) | €25 | €40 | 24 months | 500 Mb | — |
| Unlimited 5G · 12 months | €44.99 | €50 | 12 months | 500 Mb | — |
Who it’s for
Renters who cannot wait for a landlord’s Open Eir appointment, new-builds still waiting on a fibre drop, and households that need internet this week rather than this quarter. Take it with you if you move. Skip it if SIRO, NBI or Open Eir FTTH is already live at the Eircode — 5G will not beat a wired line on upload, latency or evening consistency, and you should not pay a 24-month mobile contract to avoid plugging into fibre that is sitting in the hall.
Get it if
- You rent, or you move often, and you need a router you can take with you
- Fibre is “coming” — OpenPort, NBI or an Open Eir upgrade — and you need something this week
- The promotional €25 / 24-month Unlimited 5G undercuts the fibre intros you can actually order
- A phone on Three 5G already works well in the room where the router will sit
Skip it if
- SIRO, NBI or Open Eir FTTH is already live — do not pick 5G over a wired line
- You need consistent upload and low latency for WFH video or competitive gaming
- Indoor coverage is poor (thick walls, basement flat) and you cannot use an external antenna
- You want a contract speed guarantee rather than a mast-dependent “up to 500 Mb” headline
Networks they sell
5G home. Three’s own mobile network, not a wholesale fibre line. A self-install indoor router talks to the nearest mast. Coverage, congestion and indoor walls decide the speed. There is no Open Eir, SIRO, NBI or Virgin path on this product — if you need those, you are shopping a different retailer.
Our verdict
Three is the 5G home broadband we point renters and “fibre-next-year” households at in August 2026. Score 7.9, superlative Best 5G home — and the score is honest about what the product is. Value is the strongest bar (8.5) because the promotional 24-month Unlimited 5G is €25 a month with no setup fee and no engineer. Reliability (7.0) and speed-as-technology (7.2) sit lower because a mast is not a fibre, evening cell congestion is real, and indoor brick can wreck a living-room router.
The commercial picture is simpler than fibre. Two home plans: €25 for 24 months then typically €40, or €44.99 for 12 months then typically €50. No landline, no TV bundle, 14-day cooling-off. Owned by Three Ireland (Hutchison). Annual-rise risk still exists on mobile-broadband contracts, so the small print on the 12- versus 24-month term matters. ComReg’s 2.2% share is the scale of 5G home as a fixed substitute, not a reason to treat Three as a fibre also-ran.
Get it if you need internet this week, you can take the router to the next let, or NBI / OpenPort has not landed yet. Skip it if full fibre is already at the door, you WFH on back-to-back video, or you game on latency. Check the Eircode — and walk the house with a phone on Three 5G — before you sign 24 months. When the fibre engineer finally books, switch; this is a stopgap that happens to be cheap, not a forever line.
We score Three on contract fairness, year-two cost, coverage (whether 5G actually reaches the house), technology, and service — not on a lab Mbps we did not measure. Prices are introductory EUR as of August 2026, taken from the provider dataset we keep for every Irish retailer. The 500 Mb figure is Three’s advertised download on the plans we track; it is not an independent speed-test result and it is not a wired guarantee. No provider can pay for a better score.
Three broadband: frequently asked questions
Is Three home broadband fibre?+
No. Three does not retail Open Eir, SIRO, NBI or Virgin. Three home broadband is 5G on its mobile network: you plug in a router and skip the fibre engineer. If a full-fibre line is already at the Eircode, buy the fibre.
How much is Three 5G home broadband in Ireland?+
As of August 2026, Unlimited 5G on a 24-month promotional contract is €25 a month (thereafter typically €40). Unlimited 5G on 12 months is €44.99 intro, then typically €50. No setup fee on the plans we track. Prices move — confirm at checkout and read whether an annual increase can still apply.
How fast is Three 5G home broadband?+
The advertised download on the plans we track is 500 Mb. That is a headline, not a measured lab result and not a wired speed guarantee. Real speed depends on mast load, distance, and indoor walls. Evening congestion is common. We do not invent a “typical Mbps” we did not measure — check coverage at the Eircode and test Three 5G on a phone in the house before you commit.
Is Three 5G home broadband unlimited?+
Headline home plans are sold as unlimited. Fair-use and traffic management still apply. Treat “unlimited” as no billed cap for ordinary household use, not a promise that a busy cell will never slow you or that heavy all-day use will never be managed.
Is Three 5G good for renters?+
Yes — that is the core use case. No landline, no engineer visit, self-install router, and you can take it to the next let. A 24-month promo at €25 is cheap year-one internet if the mast is decent. Just do not sign 24 months if you already know fibre will be live in a few weeks and you would rather not pay an early-termination fee.
Does Three home broadband need an engineer or a landline?+
No. It is a plug-in indoor router. There is no Open Eir install calendar and no landline requirement. If indoor signal is weak, an external antenna is plan B — that is a coverage fix, not a fibre install.
Is Three 5G good enough for working from home?+
Often for browsing, email and the odd video call, if the cell is healthy. It loses to full fibre on upload and latency, which is what back-to-back Teams or Zoom actually punishes. If WFH is the job, prefer SIRO / NBI / Open Eir FTTH when it exists. Use Three as the stopgap, not as a substitute for a line that is already there.
Can I game on Three 5G home broadband?+
Casual gaming and streaming can be fine. Competitive online play cares about latency and consistency more than the 500 Mb headline, and a busy 5G cell in the evening is a poor match for that. Fibre wins this comparison whenever it is available.
What happens when the 24-month Three deal ends?+
You stay on the same plan at the thereafter rate unless you switch or take a new deal. On the promotional Unlimited 5G that is typically €40 a month, versus €25 intro. If fibre has arrived in the meantime, switch — Irish switching is designed to be used. Leaving early can mean an early-termination fee.
How do I check if Three 5G home broadband will work at my address?+
Check availability at your Eircode on Three’s broadband page, then sanity-check with a phone on Three 5G in the room where the router will live — not on the windowsill of a different floor. Indoor brick, basements and rural mast distance are the usual failures. Coverage is cell-dependent; a neighbour’s result is not a guarantee.
How does Three 5G compare with fibre?+
Fibre (SIRO, NBI, Open Eir FTTH) is the better everyday connection: stable speed, better upload, better latency. Three 5G wins on speed-to-install, portability, and a promotional €25 / 24-month price that can undercut fibre intros. It is the renter / waiting-for-fibre option, not the “fibre but wireless” option.
How does Three compare with Imagine or Starlink?+
Imagine mixes 5G home, fixed wireless and some fibre, with a price freeze on selected plans until December 2030 and leave-anytime 5G — a better rural-wireless story if you hate April hikes. Starlink is satellite for addresses fibre and 5G still cannot reach; it is not a city alternative to Three. Pick Three when 5G covers the house and you want a cheap plug-in router this week.
What is Three’s broadband market share in Ireland?+
ComReg Q1 2026 puts Three at 2.2% of fixed broadband lines — the same snapshot share as Digiweb, far behind Eir (28%), Vodafone (20.7%), Virgin (19.9%) and Sky (15.8%). That is 5G home as a niche, not a fibre network.
How do I cancel Three broadband in the cooling-off period?+
You have 14 days to cancel under the usual distance-selling rules. After that you are in the 12- or 24-month contract you signed, unless a contract-change notice gives you a penalty-free window. Switching at the end of the term is the clean exit; leaving early can mean an early-termination fee.
