Eltrona Mobile Luxembourg 2026: plans, POST 5G network, Combo bundles and full review
Eltrona is a Luxembourg operator founded in 1969, historically specialised in cable television before becoming a full telecoms provider. Since 2023, Eltrona has been a wholly owned subsidiary of the Belgian group Telenet. On mobile, Eltrona positions itself as the operator of radical simplicity: just two plans, no minimum contract, on the POST 5G network — ranked as Luxembourg’s best mobile network — with prices among the most competitive on the market, particularly when bundled with Eltrona internet and TV. This guide covers Eltrona Mobile’s plans, network, Combo logic and use cases, based on official information consulted in September 2026.
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Compare mobile plans →Eltrona in Luxembourg: a pioneer cable operator since 1969
Eltrona Interdiffusion S.A. was founded in June 1969 by Henri Denzle as a cable operator in Luxembourg — originally to serve the growing demand for television. The company built, cable by cable, a dense coaxial network across the Grand Duchy that still underpins its ultra-high-speed internet services today.
Over the decades, Eltrona expanded: digital TV in 2006, HD in 2010, broadband internet in 2012, and entry into the mobile market in 2017 using the POST network. A key step came in 2020 with the takeover of SFR and Coditel (Telenet) activities in Luxembourg. In December 2022, Telenet BV acquired all remaining stakes in Eltrona, making it a wholly owned subsidiary of the group since 2023.
| Year | Key milestone |
|---|---|
| 1969 | Eltrona Interdiffusion S.A. founded — cable operator |
| 2006–2012 | Launch of digital TV, HD, broadband internet |
| 2017 | Entry into the mobile market (MVNO on POST network) |
| 2020 | Takeover of SFR and Coditel (Telenet) activities in Luxembourg |
| 2023 | Wholly owned subsidiary of Telenet BV (Belgian group) |
| 2025 | nPerf gold medal for best fixed network performance in Luxembourg |
Sources: Eltrona — About us · Eltrona — Our company (history since 1969)
Today, Eltrona operates a hybrid fibre-coaxial network covering 85% of Luxembourg households, built and maintained in-house. This earned Eltrona the nPerf 2025 gold medal for best fixed network performance in Luxembourg. The company employs over 150 staff and operates around ten shops across the country.
Mobile is not Eltrona’s historical core — internet and TV are. Eltrona offers mobile plans primarily as a natural complement to its internet subscriptions, with very aggressive Combo pricing. If you are not (and do not plan to become) an Eltrona internet customer, the standalone mobile offer remains competitive but loses most of its pricing advantage.
Eltrona Mobile plans in 2026
Eltrona applies a philosophy of absolute simplicity: just two plans, no minimum contract, clearly differentiated by usage.
All Eltrona Mobile plans are contract-free. You can subscribe and cancel at any time, without penalty. You can also switch plans at any time via the online customer area or by contacting customer service.
| Plan | Data | Calls/SMS | Standalone price | Combo price | Contract |
|---|---|---|---|---|---|
| Mobile 2 GB | 2 GB | 60 min / SMS | €5.99/month | From €1.99/month | None |
| Mobile 100 GB | 100 GB | Unlimited | €29.99/month | From €19.99/month | None |
Prices verified on eltrona.lu in September 2026. Compare with other operators on our mobile plan comparison tool →
Mobile 2 GB — the ultra-affordable entry plan
The Mobile 2 GB plan is designed for users who do most of their browsing on Wi-Fi (at home or at work) and only need mobile data occasionally — urgent calls, light browsing during short trips. For regular daily use including social media or streaming, the Mobile 100 GB will be far more suitable.
Daily usage on Wi-Fi at home and at the office
Mobile = a few calls + light browsing during short trips
Combo price (with Eltrona internet): €1.99/month
→ The cheapest mobile plan on the Luxembourg market for an Eltrona internet subscriber
Mobile 100 GB — unrestricted intensive use
The Mobile 100 GB plan includes unlimited calls and SMS, and 100 GB of data on the POST 5G network. At €29.99/month standalone or from €19.99/month in a Combo with Eltrona internet, this is very competitive pricing for 100 GB + unlimited calls on Luxembourg’s n°1 network.
Still unsure? Compare Eltrona 100 GB with equivalent market offers →
Mobile network: Eltrona on the POST 5G network
Eltrona Mobile is a mobile virtual network operator (MVNO) using the mobile infrastructure of POST Telecom, Luxembourg’s incumbent operator. This partnership gives Eltrona access to Luxembourg’s best mobile network according to independent tests, without having to deploy its own cellular infrastructure.
| POST network indicator | Value / ranking | Source |
|---|---|---|
| 5G population coverage | 94.8% of the population | ILR |
| Independent ranking | n°1 — « Best in Test » 2024 (3rd consecutive year) | connect Magazin / umlaut |
| Average download speed | ~148.7 Mbit/s | SpeedGEO 2025 |
| Mobile market share LU | +50% | ILR |
Sources: POST Luxembourg — 5G network · SpeedGEO 2025 · ILR 5G coverage barometer
Eltrona Mobile plans run on the POST 5G network — with 5G coverage where available, and 4G everywhere else in Luxembourg. Network quality and coverage are identical to what you would get by subscribing directly with POST. For roaming conditions, some differences may exist compared to a direct POST subscription.
What Eltrona owns vs what it uses through partnerships
On the fixed side, Eltrona owns its hybrid fibre-coaxial network covering 85% of the country — its true competitive advantage and the source of its nPerf 2025 medal. On the mobile side, Eltrona uses the POST network, allowing it to offer n°1 network quality without the associated infrastructure investment, and therefore at more competitive prices. For more on the POST network, see our POST Mobile Luxembourg guide.
The Eltrona Combo: internet + TV + mobile
The real argument for Eltrona Mobile is its integration into the Eltrona Combo system, which combines internet GiGA, TV+ and mobile plans for substantial, permanent monthly savings.
The Combo logic in numbers
These savings are permanent — there is no introductory period after which the price increases. « Lifetime » means the discount applies for the entire duration of your subscription, as long as you maintain both or all three services.
The three Combo services
- Internet GiGA: hybrid fibre-coaxial connection up to 1 Gbit/s, FRITZ!BOX 6660 modem (Wi-Fi 6) included, nPerf 2025 gold medal. Installation guaranteed in less than 7 days.
- TV+: over 100 HD channels via streaming, accessible through the Eltrona TV+ app on all screens (smartphones, tablets, smart TVs). Available across Europe (EU) via Wi-Fi, 3G or 4G.
- Mobile: Mobile 2 GB or Mobile 100 GB plan on the POST 5G network.
Eltrona Mobile standalone
- Mobile 2 GB: €5.99/month
- Mobile 100 GB: €29.99/month
- POST 5G network
- No minimum contract
Eltrona Mobile in Combo
- Mobile 2 GB from €1.99/month
- Mobile 100 GB from €19.99/month
- Same network, same features
- Savings up to €360/year for life
European roaming and add-on options
Roaming in Europe — activatable options
Eltrona Mobile base plans (2 GB and 100 GB) are designed primarily for use in Luxembourg. For communications in Europe, activatable options are available on request:
| Option | Price | Activation |
|---|---|---|
| 30 minutes of calls from Luxembourg to Europe | €5 | Monthly or one-off |
| 100 SMS from Luxembourg to Europe | €5 | Monthly or one-off |
| 1 GB of data in Europe | €5 | Monthly or one-off |
| 5 GB of data in Europe | €9 | Monthly or one-off |
Source: Eltrona — Plan configurator. Always check current conditions on eltrona.lu as the offer may change.
Important point: unlike Orange, Tango, POST and LOL Mobile, which include EU roaming by default in their standard plans, Eltrona Mobile requires the activation of separate options for European communications. For cross-border residents or frequent European travellers, this means planning option activation before leaving. For full details on roaming in Luxembourg, see our complete roaming guide.
Out-of-bundle usage in Luxembourg
If you exceed your data or call allowance in Luxembourg, the automatic €50 spending cap (described in the next section) kicks in before your bill becomes problematic. Detailed out-of-bundle rates are available on eltrona.lu.
Automatic €50 spending cap: protection against bill shock
One of the distinctive features of Eltrona Mobile plans is the automatic overage block: once you reach €50 of overages for data and calls (in Luxembourg or in Europe, zone 1), your plan is automatically blocked. This makes it impossible to receive a surprise mobile bill of several hundred euros from uncontrolled out-of-bundle usage.
This cap is particularly useful for parents wanting to control their children’s mobile spending, users unfamiliar with managing their mobile consumption, and any customer wanting full control over their monthly bill. Note: this is not an absolute cap on the total bill — it applies only to overages beyond the bundles included in the plan.
Who is Eltrona Mobile for?
Eltrona Mobile is ideal if…
Well-suited profiles
You are already an Eltrona internet customer (or plan to become one) and want to bundle internet + mobile (+ TV) with one operator, one bill and permanent savings of up to €360/year.
You want the best value for money for 100 GB + unlimited calls in a Combo: hard to beat on the POST 5G network in Luxembourg.
You value simplicity: two clear plans, transparent prices, no minimum contract, fully online activation.
You want automatic protection against overage charges: the €50 block is included by default.
Your mobile usage is mainly in Luxembourg, with occasional European travel manageable via add-on options.
Eltrona Mobile is less suited if…
Profiles to consider carefully
You travel frequently in Europe and need EU roaming included automatically without managing options: Orange, Tango, POST and LOL Mobile all include EU roaming in their standard plans.
You need coverage outside the EU (USA, Canada, Asia…): these destinations are not covered by standard Eltrona Mobile plans.
You are not eligible for the Eltrona cable network (15% of households not covered): without Eltrona internet, you lose the main Combo pricing advantage. Check eligibility on eltrona.lu before subscribing.
You want a wider range of plans: with only two options, Eltrona cannot precisely match all intermediate consumption profiles.
Eltrona Mobile vs other Luxembourg operators
Eltrona occupies a well-defined niche: the most affordable converged operator, with the n°1 network (POST), for customers who bundle all their telecoms services. Here is how it compares against the main competitors.
| Criterion | Eltrona | Orange | Tango | POST direct |
|---|---|---|---|---|
| Mobile network | POST 5G (via MVNO) | Orange 5G (own) | Tango 5G (own) | POST 5G (own) |
| No minimum contract | ✓ All plans | ✓ Boom, Access+ | ✓ All GO plans | ✗ Min. 12 months |
| EU roaming included | ✗ Add-on option | ✓ Included | ✓ Included | ✓ Included (except mini) |
| Internet+mobile bundle saving | Up to −€30/month lifetime | Discount up to −€10/month | GO advantage (−€3 + data) | POP Advantage (−€5/line) |
| Auto out-of-bundle block | ✓ €50 by default | Paid option | Paid option | Option (€2/month) |
| Number of plans | 2 only | 4 | 7 | 7 |
Sources: operator official websites consulted in September 2026. Check current conditions on our plan comparison tool.
Eltrona’s main limitation: the absence of EU roaming included by default. This is a deliberate strategic choice — plans are priced without this coverage, which enables very low Combo prices. For a resident whose European travel is infrequent or predictable, one-off options can be sufficient. For a cross-border worker or regular traveller, this is an important point to consider.
Compare Eltrona with all operators in 2026
Our comparison tool shows current offers from all Luxembourg operators — including Combo plans and discounted prices — with precise up-to-date conditions.
Frequently asked questions about Eltrona Mobile Luxembourg
Which mobile network does Eltrona use in Luxembourg?
Eltrona Mobile uses the mobile network of POST Telecom, Luxembourg’s incumbent operator. POST has the most extensive 5G network in Luxembourg (94.8% population coverage according to the ILR) and is ranked n°1 in independent quality tests (connect Magazin/umlaut, « Best in Test » 2024). By subscribing to Eltrona Mobile, you access this network on 5G where available, and 4G everywhere else in Luxembourg.
Are Eltrona Mobile plans contract-free?
Yes. The Mobile 2 GB and Mobile 100 GB plans are offered with no minimum contract. You can cancel at any time, with no fees. You can also switch plans at any time via your online customer area or by contacting Eltrona’s customer service.
What is the Eltrona Combo and how much can it save?
The Eltrona Combo is the permanent discount system for customers who combine multiple Eltrona services (internet GiGA, TV+, mobile). Combining 2 services: €20/month lifetime saving (€240/year). Combining 3 services: €30/month lifetime saving (€360/year). These discounts apply for the entire duration of the subscription as long as you maintain the combined services — there is no promotional period after which the price would increase.
Does Eltrona Mobile include EU roaming?
No, not by default. Unlike Orange, Tango, POST and LOL Mobile, which include EU roaming in their standard plans, Eltrona Mobile plans (2 GB and 100 GB) do not automatically include European communications. Add-on options are available: 1 GB of data in Europe for €5, 5 GB for €9, 30 minutes of calls to Europe for €5. See our roaming guide in Luxembourg for full details.
How does the automatic €50 spending cap work at Eltrona?
At Eltrona, your plan is automatically blocked once you reach €50 of overages for data and calls (in Luxembourg or in Europe, zone 1). This mechanism is active by default for all subscribers, with no option to subscribe to. If you are blocked and wish to continue using your service, contact customer service or add an option via your customer area.
Can I keep my number when switching to Eltrona Mobile?
Yes. Number portability from any Luxembourg operator is free and handled by Eltrona. Simply provide the required information (current number, ICCID, current operator name) when subscribing — Eltrona manages all the administrative steps.
How do I contact Eltrona’s customer service?
Eltrona’s customer service is reachable at +352 499 466 888, Monday to Saturday until 7pm. You can also contact Eltrona via the online form on eltrona.lu, or visit one of the Eltrona shops (notably in Luxembourg City, Strassen and Belval). Subscription is fully available online via the configurator on eltrona.lu, and SIM card activation is free.
Is Eltrona available throughout Luxembourg?
For internet and TV, the Eltrona cable network covers approximately 85% of Luxembourg households — mainly urban and residential areas. For mobile only, Eltrona can be subscribed to independently, without being an internet customer. Check eligibility at your address directly on eltrona.lu before subscribing to the Combo.