Updated September 28, 2026 · NomadCue Editorial Team
4ka vs A1 Telekom Austria
4ka
Higher score in this comparison
A1 Telekom Austria
What sets them apart
| Compare | 4kaReviewSee alternativesSee alternatives | A1 Telekom AustriaReviewSee alternativesSee alternatives |
|---|---|---|
| Price from | €5 | €4.90Lower |
| Countries covered | 18 | 137Higher |
| Unlimited data | YesHas it | No |
| Reference plan prices | Zone 2 travel passes: 500 MB 5 EUR/7 days, 3 GB 10 EUR/30 days (Europe incl. Switzerland, Serbia, Turkey; Greenland, Canada, USA; Egypt, Morocco, Tunisia). UK/Ukraine/Moldova: Zone 1, roaming at home rates under SLOBODA plans. Mexico: Zone 3, no data pack, 0.025 EUR per MB. Japan/Thailand: Zone 3A, no data pack, 3.0750 EUR per MB. EU: unlimited plan gives 11.39 GB in the EU. | US EUR 4,90/GB; UK EUR 4,90/GB; Japan EUR 5,90/GB; Thailand EUR 4,90/GB; Turkey EUR 4,90/GB; Mexico EUR 4,90/GB; Europe included in home plan inside EU, Switzerland EUR 4,90/GB; global Roaming Pass EUR 4,90-14,90/GB, data week 2 GB EUR 4,90, data week world 1 GB EUR 9,90 |
| Fair use policy | SLOBODA NEKONEČNO for one: unlimited data in Slovakia, of which 11.39 GB in the EU. Shared plan for two to four: 4 GB in Slovakia and the EU; with extra data 18.78 to 33.56 GB in the EU. | EU permanent roaming use excluded: roaming surcharges are charged if over 50 percent of minutes, SMS or data are used abroad and the SIM is registered abroad for more than half the observation period of 4 billing periods; Roaming Pass data blocks at a spend limit that defaults to EUR 60 |
| Price per GB from | Not confirmed | €2 |
| Networks | Not confirmed | USA: AT&T, T Mobile, Verizon, UK: Vodafone, 3, T Mobile, Virgin Media O2, Japan: DoCoMo, Softbank, KDDI, Turkey: Turkcell, Vodafone, Thailand: AIS, True Move H, dtac (TriNet), Mexico: Telcel, AT&T, Switzerland: Swisscom, Sunrise, Salt, Brazil: Claro, Vivo, India: Airtel, Australia: Optus, Telstra, Vodafone, China: China Mobile, China Unicom, China Telecom |
| 10 GB in Europe | Not confirmed | €49 |
| 10 GB in the US | Not confirmed | €49 |
| 10 GB in Japan | Not confirmed | €59 |
Same on both: 5G (Yes), Top-ups (Yes), Seller type (Carrier).
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Key differences
- Price from is lower at A1 Telekom Austria: €4.90 vs €5.
- Countries covered is higher at A1 Telekom Austria: 137 vs 18.
- Unlimited data: only 4ka.
- Support channels: only A1 Telekom Austria offers Email.
- Founded is lower at A1 Telekom Austria: 1996 vs 2015.
- Region: only 4ka offers Regional.
- Region: only A1 Telekom Austria offers Global.
- Features: only 4ka offers Unlimited data, Instant activation.
Our verdict on each
4ka
4ka suits Slovak subscribers who want their home plan to roam rather than buying a travel eSIM, and it starts at €5 with coverage across 18 countries. The trade-off is the fair use policy, which caps the EU share of the unlimited data.
A1 Telekom Austria
A1 Telekom Austria is a carrier roaming option rather than a travel eSIM, which suits subscribers who want one home bill and known networks in 137 countries. The trade-off is cost, since data is metered and priced per GB rather than sold as a flat travel eSIM.
Score breakdown
| Area | 4ka | A1 Telekom Austria |
|---|---|---|
| Cost | 9.0Higher | 8.4Per GB starts at €2 and entry is €4.90, pricier than the travel eSIMs beside it. |
| Offer | 9.0Regional reach of 18 countries with unlimited data in the feature list unlimited data, 5g and instant activation and a fair use policy. | 9.2HigherCarrier service with 5g and carrier plan and partner networks in 137 countries, plus top-ups. |
| Trust | 8.3 | 9.4Higher |
How the counts compare
| Fact | 4ka | A1 Telekom Austria |
|---|---|---|
| Price from | €5 | €4.90 |
| Countries covered | 18 | 137 |
How they place
| Ranking | 4ka | A1 Telekom Austria |
|---|---|---|
| Travel SIMs and eSIMs | 291 of 926 | 292 of 926 |
| Travel eSIMs | 298 of 918 | 299 of 918 |
Every fact side by side
| Fact | 4ka | A1 Telekom Austria |
|---|---|---|
| Region | Regional | Global |
| Features | Unlimited data, 5G, Instant activation, Carrier planCovers more | 5G, Carrier plan |
| Audience | Short trip, Long trip | Short trip, Long trip |
| Legal entity | SWAN, a.s. | A1 Telekom Austria AG |
| Headquarters | Slovakia | Austria |
| Founded | 2015 | 1996Lower |
| Support channels | Phone, Chat, Help centre | Email, Chat, Phone, Help centreCovers more |
Where each stands against the rest
| Fact | 4ka | A1 Telekom Austria | Median |
|---|---|---|---|
| Price from | €5above the median | €4.90below the median | €4.99 |
| Price per GB from | Not confirmed | €2above the median | €1.44 |
| Countries covered | 18lowest quarter | 137above the median | 120 |
| 10 GB in Europe | Not confirmed | €49highest quarter | €12 |
| 10 GB in the US | Not confirmed | €49highest quarter | €15.99 |
| 10 GB in Japan | Not confirmed | €59highest quarter | €15.99 |
Median across 492 listed travel providers.
Pros and cons
4ka
Pros
- Unlimited data on home networks, with top-ups available for a longer trip.
- Roaming to 18 countries, the UK, Ukraine and Moldova at SLOBODA home rates.
- Support on phone, chat and help centre from a carrier founded in 2015.
Cons
- Coverage is limited to 18 countries, well short of a global eSIM.
- Mexico, Japan and Thailand bill per MB under their own zone rates.
- Unlimited data comes with a fair use policy that caps the EU share.
A1 Telekom Austria
Pros
- Sold as a carrier plan, so roaming stays on the home bill
- Covers 137 countries with named hosts including AT&T, Vodafone and DoCoMo
- Support spans email, chat and phone, and top-ups are available for longer trips
Cons
- Unlimited data is not offered, so heavy streaming abroad is metered
- The fair use policy blocks permanent EU roaming once most use happens abroad across several billing periods
- Per GB starts at €2, above the travel eSIMs listed alongside
Who each suits
4ka
Who it suits
- Slovak subscribers on a home plan who want it to keep working abroad
- Travellers on short trips to Europe, Canada and the USA
- People who prefer a carrier desk reachable by phone, chat and help centre
Who should look elsewhere
- Anyone planning a trip outside Europe: Zwitchy covers 200 countries.
- Price-first buyers: eSIMGo.is starts at $0.99 against 4ka's €5.
- Travellers who want a different price point for a single market: SimToIsrael starts at $25.
A1 Telekom Austria
Who it suits
- Austrian A1 subscribers who would rather add roaming than buy a new eSIM
- Travellers heading to the US, UK, Japan, Turkey, Thailand, Mexico, Switzerland, Brazil, India, Australia or China, where partner networks are named
- Short trips and long trips alike, with top-ups for journeys that overrun the plan
Who should look elsewhere
- Anyone who needs unlimited data, since it is not offered here
- Buyers who want a pre-bought travel eSIM, where eSIMGo.is starts at $0.99
- Travellers whose route runs past the footprint, since Zwitchy covers 200 countries
Current offers
4ka
Current offer
First period offer
Unlimited plan for two at the price of one: first 30 days
Birthday offer; after the first 30 days the plan automatically stays on SLOBODA NEKONEČNO for one unless another plan is chosen
Source, checked September 26, 2026
Bonus
Port your number to 4ka: 4 EUR start credit plus 1 GB data in the EU for 30 days
Number port-in to 4ka, no contract
Source, checked September 26, 2026
Bonus
Free 3 GB roaming pack for customers in affected Middle East countries: 3 GB free for 30 days
Activated automatically on 3 March 2026 for all prepaid and postpaid customers located in affected countries; Middle East countries temporarily moved from Zone 3 to Zone 2
Source, checked September 26, 2026
A1 Telekom Austria
Current offer
Bonus
A1 Select first slot 6 months free: 6 months free, then EUR 6.90 per month
A1 Select new customers only; active A1 fixed-line or mobile contract required; monthly cancellation possible
Source, checked September 26, 2026
Discount code
Samsung Weeks: up to EUR 150 off selected Samsung Galaxy models: up to EUR 150
Saving depends on current mobile tariff and device model; applies to Galaxy Z series, S26+ and S26 Ultra
Source, checked September 26, 2026
Country by country
| Country | 4ka | A1 Telekom Austria |
|---|---|---|
| Austria | No | Yes |
| Slovakia | Yes | No |
Questions about each
4ka
How much does a 4ka roaming pack cost?+
Roaming packs start at €5, and travel passes are priced by data allowance and the number of days you buy. Coverage runs to Europe including Switzerland, Serbia and Turkey, Greenland, Canada and the USA, and Egypt, Morocco and Tunisia. The UK, Ukraine and Moldova roam at home rates under the SLOBODA plans.
Is 4ka data really unlimited?+
Unlimited data is listed for home use in Slovakia, and the fair use policy caps how much of it can be used in the EU. Shared plans carry a smaller allowance at home and across the EU, with extra data sold on top. Read that cap before a long EU trip. The roaming map runs to 18 countries.
A1 Telekom Austria
What does roaming data cost?+
Data starts at €4.90, with a headline rate of €2 per GB. Reference prices sit at the same level for the US, UK, Thailand, Turkey and Mexico, and Japan is higher. Travel inside the EU is included in the home plan, while Switzerland and the global Roaming Pass are billed separately.
How many countries are covered?+
Coverage runs to 137 countries, with partner networks named in the US, UK, Japan, Turkey, Thailand, Mexico, Switzerland, Brazil, India, Australia and China. Recognisable hosts include AT&T in the US, Vodafone in the UK and DoCoMo in Japan, so you land on a known network.
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A1 Telekom Austria