4ka review
Updated September 30, 2026 · TariffCue Editorial Team · Facts checked September 30, 2026
We earn a commission when you sign up through links on this site. Partner status can affect where a brand appears in our rankings.
Our verdict
4ka suits people in Slovakia who want a sim only line from the network that runs it, with an overall score of 9.2 on TariffCue. Plans carry no commitment and coverage reaches 97%, but the service stays inside SK, so it suits readers who want short terms close to home.
Key facts
- Best for
- A sim only line from its own network in Slovakia, with unlimited data and no long term.
- Seller type
- Network (Source, checked September 30, 2026)
- SIM-only
- Yes (Source, checked September 30, 2026)
- Price from
- €4 (Source, checked September 30, 2026)
- Reference plan prices
- SLOBODA 200: 7 EUR/month, 2 GB, no commitment; SLOBODA DATA: 16 EUR/month, unlimited data, no commitment; SLOBODA NEKONECNO pre JEDNEHO +: 23 EUR/month, unlimited data, no commitment (Source, checked September 30, 2026)
- Unlimited plan price
- €16 (Source, checked September 30, 2026)
- 5G
- Yes (Source, checked September 30, 2026)
- eSIM
- Yes (Source, checked September 30, 2026)
- Wi-Fi calling
- Yes (Source, checked September 30, 2026)
- EU roaming
- Fair use (Source, checked September 30, 2026)
- Multi-line discount
- Yes (Source, checked September 30, 2026)
- Network coverage
- 97% (Source, checked September 30, 2026)
- Markets
- SK (Source, checked September 30, 2026)
- Legal entity
- SWAN, a.s. (Source, checked September 30, 2026)
- Headquarters
- Slovakia (Source, checked September 30, 2026)
- Support channels
- Phone, Chat, Help-centre (Source, checked September 30, 2026)
- Billing
- Prepaid, Contract, Rolling
- Contract length
- 1
- Official website
- 4ka.sk
Pros and cons
Pros
- Entry pricing of €4 a month is low for a sim only line sold by the operator itself.
- Unlimited data on SLOBODA DATA at €16 a month keeps heavy use affordable with no fixed term.
- Sim only, esim, 5G and wifi calling are all available from the same seller, and coverage reaches 97%.
- A multi line discount is offered, so extra lines on one account come at a lower rate.
- Billing covers prepaid, contract and rolling, giving more choice than GETESA, which bills prepaid and contract.
Cons
- Markets are listed as SK, and readers living in other countries sit outside that area.
- EU roaming runs on fair use terms, so heavy use abroad is limited rather than included.
- Plan terms come in 1 months, so there is no longer commitment to trade for a lower monthly rate.
- Support runs on phone, chat and help centre, with every listed route going through the operator rather than a partner or community desk.
Who it suits
- Slovak households that want unlimited data on a sim only line at €16 a month without a long term.
- Anyone who wants the profile downloaded rather than posted, since esim and 5G are both offered.
- Families adding a second or third line, since 4ka offers a multi line discount.
Who should look elsewhere
- Anyone living outside Slovakia, because 4ka serves SK only.
- Travellers who need unrestricted EU data, since roaming is fair use rather than included.
- Readers who want a longer term in exchange for a lower monthly rate, since plan terms come in 1 months only.
What it does well
Every plan is sim only, so there is no handset bundle sitting alongside the line. An esim can be downloaded rather than posted, and 5G runs across the network. Wifi calling is supported, which lets a call continue over a broadband connection where the mobile signal indoors is weak. Population coverage stands at 97%. A multi line discount applies, so a household running a second or third line pays a lower rate for each extra line than for a line bought on its own.
Pricing
Entry pricing starts at €4 a month. The reference list has three plans. The entry plan pairs a small data allowance with no commitment. SLOBODA DATA gives unlimited data at €16 a month with no commitment, and SLOBODA NEKONECNO pre JEDNEHO + is the larger unlimited option, again with no commitment. Because every one of them runs without a fixed term, the figures are standing monthly charges rather than introductory rates tied to a longer deal. Readers who stream, navigate or work from a phone most days should treat €16 as the real starting point and the cheaper entry plan as the light use option.
Where it sits among rivals
On entry price, 4ka sits at 77 of 258 listed brands. On the unlimited price the placing is 57 of 173, a better position than the entry price figure gives, so the unlimited tier is where the stronger standing sits. Both lists run across a wide spread of sellers, which means a good place in the shorter one still leaves cheaper rivals behind it. Readers weighing plans for heavy use should compare unlimited figures rather than the headline entry price.
Who runs it
4ka is run by SWAN, a.s., with its home country listed as SK. Support runs on phone, chat and help centre, so a customer can pick up the phone, start a chat or work through a help centre instead of going through a partner or an outside helpdesk. The same operator supplies the SIM, the plan and the network behind it, which keeps questions in one place. Buyers who want the name on the contract and the name running the network to match will find that easy here.
How 4ka compares
- 9.2 vs 8.5
- 9.2 vs 8.5
- 9.2 vs 8.5
- 9.2 vs 8.7
- 9.2 vs 8.6
- 9.2 vs 8.5
9.2 vs 8.8
9.2 vs 9.0
9.2 vs 8.5
9.2 vs 9.0
9.2 vs 9.1
9.2 vs 8.8- 9.2 vs 9.4
- 9.2 vs 9.4
9.2 vs 9.3
9.2 vs 9.2
9.2 vs 9.2- 9.2 vs 9.2
Budget Thuis Mobile
9.2 vs 9.1
9.2 vs 9.1
9.2 vs 9.1
9.2 vs 9.1
9.2 vs 9.1
9.2 vs 9.1
9.2 vs 9.0
9.2 vs 9.0
9.2 vs 9.0
9.2 vs 8.8- 9.2 vs 8.8
9.2 vs 8.7
9.2 vs 8.7
9.2 vs 8.7
9.2 vs 8.6- 9.2 vs 8.6
9.2 vs 8.6
9.2 vs 8.6
9.2 vs 8.5
9.2 vs 8.5
9.2 vs 8.5- 9.2 vs 8.5
- 9.2 vs 8.5
- 9.2 vs 8.5
- 9.2 vs 8.0
- 9.2 vs 8.0
- 9.2 vs 8.0
- 9.2 vs 8.0
Where 4ka is available
- Available
- Slovakia
Countries from the brand (Source, checked September 30, 2026)
Frequently asked questions
How much does a 4ka sim only line cost?+
Plans start at €4 a month. The entry plan carries a small data allowance, while SLOBODA DATA gives unlimited data at €16 a month. SLOBODA NEKONECNO pre JEDNEHO + is the larger unlimited option. All three come with no commitment, so the monthly figure is the standing price.
Do I have to sign a long contract with 4ka?+
Terms are short. Billing runs prepaid, contract and rolling, and plan terms come in 1 months, so the contract length on offer is a single monthly cycle rather than a fixed year. That suits readers who travel, change jobs or share an account with someone whose data use changes month to month.
Which countries does 4ka cover?+
4ka is based in Slovakia, and its markets are listed as SK. Population coverage inside that market is 97%. Anyone who needs a line that keeps working across several countries would be better served by a seller that lists more than one market.
What happens to my data when I travel in the EU?+
EU roaming runs under fair use terms, so travel use across the European Union is limited by a fair use allowance rather than being unlimited. That covers maps, messages and the occasional video, not a month of working from a laptop abroad. Readers who need unrestricted data outside their home market should plan around fair use rather than assume it is open.
Does 4ka support esim and 5G?+
Both are on offer. An esim can be downloaded rather than posted, and 5G is available across the network, which is measured at 97% population coverage inside SK. Wifi calling is supported too, so calls can continue over a broadband connection when the mobile signal indoors is weak.
Can I add a second line and pay less?+
A multi line discount is offered, so extra lines on one account come at a lower rate than lines bought one at a time. That makes a family or a couple with several phones a natural fit. Billing covers prepaid, contract and rolling, so the extra lines do not have to sit on exactly the same payment type as the first.
How do I reach 4ka support?+
The operator is SWAN, a.s., and support runs on phone, chat and help centre. That means phone, chat and a help centre are the routes in, rather than relying on a third party or a forum. Because the same operator supplies the network, the desk handling the line can also answer questions about coverage.
How does 4ka compare with GETESA and yesss! on billing?+
Billing runs prepaid, contract and rolling at 4ka. GETESA bills prepaid and contract, which has no rolling option, and yesss! bills contract, rolling and prepaid, a mix close to 4ka's own. So the billing type alone does not separate the three, and the entry price plus the data allowance decide which one looks cheaper.
Sources
- 4ka.sk checked September 30, 2026
Backs: Multi-line discount
- 4ka.sk/esim checked September 30, 2026
Backs: ESIM
- 4ka.sk/pausaly-z-kreditu checked September 30, 2026
Backs: Billing, Contract length, Price from, Reference plan prices, SIM-only, Unlimited plan price
“bez viazanosti - 12 GB v SR”
- 4ka.sk/podpora/kontakty checked September 30, 2026
Backs: Markets, Support channels
“0950 950 950 denne 8:00 - 21:00 - Mozete nam napisat cez live chat”
- 4ka.sk/roaming checked September 30, 2026
Backs: EU roaming
“z toho 9,39 GB v EU - v ramci EU za ceny ako doma”
- 4ka.sk/spolocnost-o-nas checked September 30, 2026
Backs: Network coverage, 5G, Headquarters, Legal entity, Seller type
“Stvorkari si mozu vychutnat 5G pripojenie vo viacerych velkych mestach”
- 4ka.sk/vowifi checked September 30, 2026
Backs: Wi-Fi calling
“Technologia volanie cez WiFi (skratka VoWiFi) umoznuje telefonovanie a SMSkovanie”
Compiled from 7 source pages, checked September 30, 2026. We did not open an account.
4ka
A sim only line from its own network in Slovakia, with unlimited data and no long term.