Slovakia: 4 Best Prepaid SIM Cards Buying Guide (2022)

Slovakia – known for its castles, folk dancing & landscapes.

Apparently, the country has the highest concentration of castles worldwide.

So, castle lovers – you know where to go to.

But besides castles, what else can you do in Slovakia? A lot.

Many churches, like The Blue Church, are worth visiting.

If you love nature and hiking, head to the mountains, and you will love the landscapes.

And if you are into skiing, skip Austria and ski in Slovakia – it will be much cheaper.

As you can see, the country has a lot to offer.

What it cannot offer you, unless you have an EU/EEA SIM card, is low international roaming rates.

International roaming can be expensive, which is why I always recommend local SIM cards, like a Slovak one, so that you can enjoy local rates.

And oh boy – SIM cards are inexpensive in Slovakia.

You can get a Slovak SIM card for 1 EUR (1.10 USD) or 2 EUR (2.30 USD) from Orange, 2 EUR from O2, 4 EUR (4.60 USD) from 4ka (by Swan Mobile) & 5 EUR (5.70 USD) from Slovak Telekom (formerly T-Mobile) in their stores or post offices. SIM cards are sold near Bratislava-M.R. Štefánik Airport (BTS) at the AVION Shopping Park Bratislava mall.

Special note for those from Ukraine: be sure to ask about special benefits for Ukrainians. Many mobile operators around Europe have waived fees for you or introduced exclusive plans, including free calls back to Ukraine. Слава Україні! 🇺🇦

Those prices are not too bad, right?

What may be bad are the high mobile data rates in the country (for Central- and Eastern European standards).

But the data-featured plans will not break the bank (unlike some countries in the Caribbean).

In this guide, I will go over everything you need to know about buying a SIM card in Slovakia. Let's get started, shall we?

Original publication: 5th of February 2022. Last updated: 18th of September 2022.

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Table of Contents

Can You Buy a SIM Card in Slovakia?

Anyone living in or visiting Slovakia can buy a Slovak SIM card from Slovak Telekom (formerly T-Mobile), Orange, O2, 4ka (by Swan Mobile) & many MVNOs with no restrictions.

You do have to comply with the SIM card registration regulations.

Moreover, you need a phone that supports the frequencies used in the country (preferably all of them to have the most optimal experience while in Slovakia).

Furthermore, you need to have a SIM-lock-free device.

Where Can You Buy a SIM Card in Slovakia?

You can get a Slovak SIM card in Slovak Telekom (formerly T-Mobile), Orange, O2 & 4ka (by Swan Mobile) stores. Resellers, like post offices, also sell SIM cards (especially for 4ka and the MVNOs). They are also sold near Bratislava-M.R. Štefánik Airport (BTS) at the AVION Shopping Park Bratislava mall).

You can expect to pay the following for Slovak SIM cards:

• Slovak Telekom (formerly T-Mobile): 5 EUR
• Orange Slovakia: 1 EUR & 2 EUR
• O2 Slovakia: 2 EUR
• 4ka (by Swan Mobile): 4 EUR
• MVNOs (like Tesco Mobile Slovakia): being added later

For up-to-date EUR:your currency (let's say GBP) exchange rates, use the Wise Currency Converter tool.

Can You Use Your Phone in Slovakia?

Slovakia uses GSM technology for mobile communications. CDMA phones will not work in Slovakia. If your phone has a SIM card slot, then it supports GSMA (99% of the phones do support GSM nowadays).

Traditional European frequencies are used in Slovakia, which are mostly used in ITU Regions 1 and 3 (Africa, Asia (including the Middle East), Europe & Oceania).

The Americas (North-, Central– & South America + the Caribbean – ITU Region 2) use American frequencies, which differ from the European ones.

If you bought your phone in Africa, Asia, Europe, or Oceania (ITU regions 1 and 3), you should not experience any issues with using your phone in Slovakia.

If you purchased your phone in the Americas (ITU Region 2) and have a low/medium-end device (without Tri-Band or Quad-Band) support, then there is a possibility you cannot use your phone when in Slovakia or can only use slower networks (3G or 2G).

If you have a medium/high-end device with Tri-Band or Quad-Band support, you can use your phone in Slovakia (to some extent) – also on 4G/LTE and 5G NR.

Mobile Operators, Networks & Frequencies in Slovakia

Slovakia has four mobile operators and various Mobile Virtual Network Operators (MVNOs – being added later) offering prepaid services:

• Slovak Telekom (formerly T-Mobile)
• Orange Slovakia
• O2 Slovakia
• 4ka (by Swan Mobile)

The following frequencies are used in Slovakia:

• 2G: 900 MHz & 1800 MHz
• 3G: 900 MHz & 2100 MHz
• 4G/LTE: 800 MHz (Band 20), 1800 MHz (Band 3) & 2600 MHz (Band 7)
• 5G NR: 1800 MHz (n3), 2100 MHz (n1) & 3500 MHz-3700 MHz (n78)

You can learn more about frequencies in the video below.

To check whether your phone will work in Slovakia, check out this page by Will My Phone Work (may be outdated or inaccurate at times).

Again, make sure your phone is unlocked. Otherwise, you will not be able to use any SIM card except the one from your home operator (meaning you have to roam internationally or buy another unlocked phone that does support the frequencies listed above).

If you want to learn how international roaming works, this guide explains it in-depth. If you wonder why it is often so expensive to roam, this article explains the hidden reason they do not want you to know.

VoLTE & VoWiFi in Slovakia

Both VoLTE (Voice over LTE (4G) – also known as HD Voice) and VoWiFi (Voice over WiFi – also known as WiFi calling) are available in Slovakia. All Slovak mobile operators offer VoLTE, but not VoWiFi.

This means that your phone does not have to downgrade to 2G or 3G when making a call in Slovakia (unlike mobile operators that do not support VoLTE).

The following mobile operators offer VoLTE and VoWiFi in Slovakia:

• Orange Slovakia
• O2 Slovakia

The following mobile operators offer VoLTE only in Slovakia:

• Slovak Telekom (formerly T-Mobile)
• 4ka (by Swan Mobile)

VoWiFi is, as the name implies, calling on a WiFi connection as opposed to on a cellular network.

5G NR in Slovakia

Commercial 5G NR has been available in Slovakia since December 2021. It is available on the Slovak Telekom (formerly T-Mobile), Orange, O2 & 4ka (by Swan Mobile) networks. Slovak Telekom and 4ka offer 5G NR to prepaid customers – O2 does too for a limited time ¹. Orange does not offer 5G NR to prepaid customers – The MVNOs do not have 5G NR access yet.

¹ I managed to get 5G NR access in March 2022

Best SIM Card in Slovakia

Best eSIM in Slovakia

Slovak Telekom, Orange Slovakia, O2 Slovakia & 4ka (by Swan Mobile) offer eSIMs to prepaid customers – all for the same price as a regular physical SIM card.

Note that the Slovak mobile operators require your identification (ID for EU/EEA travelers and passport for anyone else) for eSIMs and physical SIM cards (will be discussed later).

However, you can get travel eSIMs from Airalo, Holafly & Nomad.

Airalo has the Dobrý Deň eSIMs:

You have these four options:

1. Slovakia/Dobrý Deň 1 GB eSIM for 7 days
2. Slovakia/Dobrý Deň 3 GB eSIM for 30 days
3. Slovakia/Dobrý Deň 5 GB eSIM for 30 days
4. Slovakia/Dobrý Deň 10 GB eSIM for 30 days

For Airalo eSIMs, the links above and below will automatically get you the Phone Travel Wiz exclusive offers available – a code is not necessary.

For an in-depth analysis of the Airalo Dobrý Deň eSIMs (covering pros and cons as well), check out my Slovakia eSIMs Compared guide.

Or you can get Slovakia eSIMs from Nomad.

Use code ADU123 for the best deals available when getting Nomad eSIMs (on the site or their apps), such as getting 3 USD off!

For an in-depth analysis of the Nomad Slovakia eSIMs (covering pros and cons as well), check out my Slovakia eSIMs Compared guide.

Finally, you can get Slovakia eSIMs from Holafly if you prefer unlimited data plans and do not mind paying a bit more for this advantage:

• Slovakia unlimited data eSIM for 5 days
• Slovakia unlimited data eSIM for 10 days
• Slovakia unlimited data eSIM for 15 days
• Slovakia unlimited data eSIM for 20 days
• Slovakia unlimited data eSIM for 30 days
• Slovakia unlimited data eSIM for 60 days
• Slovakia unlimited data eSIM for 90 days

Use code PHONETRAVELWIZ for exclusive deals when getting Holafly eSIMs, AND get an additional 5% off!

For an in-depth analysis of the Holafly Slovakia eSIMs (covering pros and cons as well), check out my Slovakia eSIMs Compared guide.

With these eSIMs, you can skip Slovakia's SIM card registration scheme entirely and use it immediately upon arriving in Slovakia!

TIP: check out my Best Slovakia eSIMs Compared guide for an in-depth comparison of several eSIMs for Slovakia.

If you plan on visiting other neighboring European nations, consider the Eurolink eSIM (six variants: 1 GB/7 days, 3 GB/30 days (most popular with PTW readers), 5 GB/30 days (very popular with PTW readers), 10 GB/30 days (very popular with PTW readers), 50 GB/90 days & 100 GB/180 days) in Slovakia and these other countries:

• Check out my Airalo Eurolink eSIM review (tested in Austria, Belgium, Croatia, Hungary, Greece, Italy, Malta, the Netherlands, Portugal, Slovakia, Slovenia & Spain)

Holafly and Nomad also have eSIMs covering all of the European Union (and more).

But honestly, the Eurolink eSIM is superior (but you can consider the Holafly Europe eSIM if you want unlimited data in 30+ countries – just do not forget about code PHONETRAVELWIZ if you go with Holafly).

TIP: Check out my eSIM lookup tool for an overview of local mobile operators offering eSIMs to prepaid customers and travel eSIMs I use and love (for eSIMs in Slovakia and eSIMs worldwide) and my Best Slovakia eSIMs Compared guide for an in-depth comparison of several eSIMs for Slovakia.

Best International/Travel SIM Card for Slovakia

If you want to buy the best international/travel SIM card for Slovakia, I recommend going with SimCorner's Europe SIM cards that covers Europe (mainly the European Union) and parts Asia, Central America & South America – all in one SIM card.

You have these four options:

1. Europe Travel SIM card with 7 GB for 30 days (includes calls)
2. Europe & UK Travel SIM card with 12 GB for 30 days (includes calls, SMS & data use in Asia, Central America & South America)
3. UK and Europe Travel SIM card with 100 GB for 30 days (includes calls and SMS)
4. Europe Data SIM card with 12 GB for 60 days (includes data use in Asia, Central America & South America)

• Check out my SimCorner Europe Travel SIM cards review (12 GB & 100 GB SIM cards – tested in Austria, Belgium, Croatia, Hungary, Greece, Italy, Malta, the Netherlands, Portugal, Slovakia, Slovenia & Spain)

The SimCorner Europe SIM cards can be used in Slovakia and the following other countries:

Use discount code PHONETRAVELWIZ for extra savings!

SIM Card Registration in Slovakia

SIM card registration with your passport information is required in Slovakia. It will be done at the point of purchase.

EU Roaming in Slovakia

Slovakia is part of the European Union (EU).

Since June 2017, those with EU/EEA (European Economic Area) SIM cards can roam for free in other EU/EEA nations, including Slovakia.

This means that, in the majority of cases, you do not need to purchase a Slovak SIM card if you already have an EU/EEA SIM card because you can roam without additional costs.

However, conditions do apply. Mobile operators in some countries may impose a roaming Fair Use Policy (FUP).

In countries where local mobile data rates are extremely low (such as in the Baltics and Nordics), mobile operators may still charge you for roaming in the EU/EEA.

Be sure to head over to the international roaming page to learn whether your mobile operator offers free roaming while in Slovakia or if restrictions apply.

Roaming in the EU with Slovak SIM Cards

Slovakia and the Slovak mobile operators have largely adopted the roam like at home regulations principles early on.

However, some plans have an EU/EEA roaming cap.

Moreover, the standard Fair Use Policy applies where you should not be roaming over 50% of the time over a four-month period.

If you do so, EU roaming rates will apply. You are then better off buying local prepaid SIM cards in other EU nations.

Slovakia Mobile Speeds, Mobile Internet Prices & Insights

Currency in Slovakia

Slovakia uses the Euro with the symbol EUR (which will be used throughout this guide).

However, prices are often listed as just €. For example, 25 EUR = €25.

For reference, below are some exchange rates between EUR and USD (US Dollars):

• 1 EUR = 1.15 USD
• 10 EUR = 10.75 USD
• 100 EUR = 107.50 USD

For up-to-date EUR:your currency (let's say CZK – Czech Koruna) exchange rates, use the Wise Currency Converter tool.

If your credit/debit card charges you foreign exchange fees, get yourself a Wise Borderless Account and Debit Card.

Their fees are MUCH lower than banks, and credit card companies charge you (and Wise is transparent about their fees, unlike banks).

I have saved literal THOUSANDS of Euros, my main currency, when using Wise abroad when traveling compared to my debit and credit cards. Open a Wise account FREE!

Slovak Prepaid SIM Cards

Below, I will guide you through Slovak Telekom (formerly T-Mobile), Orange Slovakia, O2 Slovakia, 4ka (by Swan Mobile) & many MVNOs that will be added later, and go through:

• Background information
• Mobile coverage
• SIM card types, prices & availability
• Recharge / top-up information
• Combo plans, data plans & special packs (such as social media packs)

With that being said, let’s see what Slovakia has to offer to us.

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Slovak Telekom (formerly T-Mobile)

Slovak Telekom, sometimes referred to as just Telekom and formerly T-Mobile Slovakia, is the largest mobile operator in Slovakia.

It is, together with Orange Slovakia, the mobile operator with the best overall network.

Slovak Telekom, by Deutsche Telekom (from Germany), is active in Europe (as Telekom and T-Mobile) and the United States (as T-Mobile).

Slovak Telekom uses the following frequencies:

• 2G: 900 MHz & 1800 MHz
• 3G: 900 MHz & 2100 MHz
• 4G/LTE: 800 MHz (Band 20), 1800 MHz (Band 3) & 2600 MHz (Band 7)
• 5G NR: 2100 MHz (n1)
• VoLTE: Yes
• VoWiFi: No

This is what you will learn about Slovak Telekom:

* Coverage
* How to Get a Slovak Telekom SIM Card & SIM Card Price
* Topping Up Options & Methods + Balance Check
* Plans & Packages
* APN/Internet Settings

Coverage – Slovak Telekom (formerly T-Mobile)

Slovak Telekom has the best 4G/LTE coverage experience.

This was also confirmed by Opensignal.

Below is Slovak Telekom's coverage map:

SIM Card Price – Slovak Telekom (formerly T-Mobile)

You can get a Slovak Telekom SIM card, called Predplatenka, for 5 EUR with 10 EUR credit, 1 GB of data & unlimited local minutes in Slovak Telekom stores. SIM cards are not sold at Bratislava-M.R. Štefánik Airport (BTS), but the AVION Shopping Park Bratislava mall near the airport does have a Slovak Telekom store.

It is also possible to get a Slovak Telekom eSIM for the same price as a regular SIM card.

To use a Slovak Telekom eSIM, you need to have one of the following devices:

Note that Slovak Telekom offers VoLTE (Voice over LTE (4G)) if your phone supports it and if you have enabled it in the settings but no VoWiFi (Voice over WiFi).

You may have to text VoLTE to 12323 to activate VoLTE.

Slovak Telekom SIM cards get deactivated if there has been no activity for 12 months (no top-up for 12 months or no activity for 12 months).

Top-Up, Recharge & Balance Check – Slovak Telekom (formerly T-Mobile)

Packages, Plans, Bundles & Offers – Slovak Telekom (formerly T-Mobile)

Slovak Telekom has only one data-featured plan: Doplnkové Balíky k Predplatenke (Additional Payment Packages). It features data (with 5G NR access).

Text the Activation Code to 12330 to activate Doplnkové Balíky k Predplatenke:

Price	Data	EU/EEA Data	Validity	Activation Code	Deactivation Code
0.50 EUR	300 MB	Shared with data allowance	Until midnight	DAT	DAT VYP
1.50 EUR	2 GB	Shared with data allowance	24 hours	2GBDEN	2GBDEN VYP
2 EUR	1 GB	Shared with data allowance	10 days	1GB10DNI	1GB10DNI VYP
2 EUR	Unlimited	1.33 GB	24 hours	App only	App only
3 EUR	1 GB	Shared with data allowance	30 days	TRIAL DATA	TRIAL DATA VYP
6 EUR	3 GB	Shared with data allowance	30 days	3GB30DNI	3GB30DNI VYP
8 EUR	8 GB	3.81 GB	30 days	5GB30DNI	5GB30DNI VYP

Doplnkové Balíky k Predplatenke auto-renew. To disable auto-renewal, text the Deactivation Code to 12330.

EU Roaming – Slovak Telekom (formerly T-Mobile)

You can use your Slovak Telekom allowances in the following EU/EEA member states without paying roaming fees:

Be aware that, in some cases, the EU/EEA roaming allowance is lower than the domestic allowances.

APN/Internet Settings – Slovak Telekom (formerly T-Mobile)

• Name: Telekom Internet
• APN: internet

Note: leave anything not mentioned above untouched.

Jump back to the Table of Contents.

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Orange Slovakia

Orange Slovakia, just Orange, is the second-largest mobile operator in Slovakia.

However, it is often the largest mobile operator, as the subscriber numbers between Orange and Slovak Telekom (formerly T-Mobile) are minimal.

Orange, as a company, is active in other countries in Africa, the Caribbean, Europe & the Middle East.

Orange uses the following frequencies:

• 2G: 900 MHz & 1800 MHz
• 3G: 900 MHz & 2100 MHz
• 4G/LTE: 800 MHz (Band 20), 1800 MHz (Band 3) & 2600 MHz (Band 7)
• 5G NR: 1800 MHz (n3) & 3500 MHz (n78) – not for prepaid customers (yet)
• VoLTE: Yes
• VoWiFi: Yes

This is what you will learn about Orange:

* Coverage
* How to Get an Orange SIM Card & SIM Card Price
* Topping Up Options & Methods + Balance Check
* Plans & Packages
* APN/Internet Settings

Coverage – Orange Slovakia

Orange has the best 4G/LTE availability and coverage experience.

This was also confirmed by Opensignal.

Orange has quite a few official coverage maps, so we will go through them all quickly.

Below is the Orange 2G coverage map:

Then we have an Orange 3G coverage map for speeds up to 21 Mbps:

Followed by an Orange 3G coverage map for speeds up to 42 Mbps:

Now we will get four Orange 4G/LTE coverage maps, starting with speeds up to 100 Mbps:

Here is the Orange 4G/LTE coverage map with speeds up to 200 Mbps:

Then the Orange 4G/LTE coverage map with speeds up to 300 Mbps:

At last, the Orange 4G/LTE coverage map with speeds up to 680 Mbps:

Finally, we have an Orange coverage map of its 5G NR network (which is not available to prepaid customers… yet):

Here is an Orange coverage map produced by Speedtest:

SIM Card Price – Orange Slovakia

You can get an Orange SIM card for 1 EUR (Go €1) or 2 EUR with 2 EUR credit and 1 GB of data (Prima Dáta) in Orange stores. SIM cards are not sold at Bratislava-M.R. Štefánik Airport (BTS), but the AVION Shopping Park Bratislava mall near the airport does have an Orange store.

It is also possible to get an Orange eSIM for the same price as a regular SIM card.

Currently, Orange does not have a list of devices that can use its eSIM.

But I suspect the standard Google Pixel, iPhone, Huawei (Mate) P40 (Pro) & Samsung (Galaxy (Note))/Flip can use Orange's eSIMs.

Note that Orange offers VoLTE (Voice over LTE (4G)) if your phone supports it and if you have enabled it in the settings.

Oh, you can also use VoWiFi (Voice over WiFi).

Orange SIM cards get deactivated if there has been no activity for 12 months (no top-up for 12 months or no activity for 12 months).

Top-Up, Recharge & Balance Check – Orange Slovakia

Packages, Plans, Bundles & Offers – Orange Slovakia

Orange has two data-featured plans: Dátové Balíky (Data Packages) & Go Plans (customizable combo).

Dátové Balíky (Data Packages) – Orange Slovakia

The Dátové Balíky (Data Packages) are, as the name implies, data plans (without 5G NR access).

Text the Activation Code to 445 to activate Dátové Balíky:

Price	Data	Validity	Activation Code	Deactivation Code
1 EUR	200 MB	30 days	200 A	200 D
2 EUR	1 GB	7 days	TYZ1GB A	TYZ1GB D
2 EUR	“Unlimited”, 5 GB high-speed 1	Until midnight	DEN5GB A	DEN5GB D
4 EUR	1 GB	30 days	1GB A	1GB D
6 EUR	2 GB	30 days	2GB A	2GB D
10 EUR	10 GB	30 days	10GB A	10GB D

¹ unlimited data @ 3 Mbps after using 5 GB

Dátové Balíky auto-renew. To disable auto-renewal, text the Deactivation Code to 445.

Go Plans – Orange Slovakia

The Go Plans are customizable combo bundles for the Prima Dáta SIM card.

Go Plans cost at least 1 EUR a month, regardless of whether you add data (without 5G NR access), minutes, or SMS or not.

Data allowances range from 200 MB (1 EUR) to 20 GB (60 EUR).

50 minutes and 50 SMS can be added for 4 EUR, in addition to your data allowance.

If you want 100 minutes and 100 SMS, you will be charged 9 EUR.

Below are all the data options. Go Plans can be activated on the Môj Orange app:

Price	Data
1 EUR	200 MB
2 EUR	400 MB
3 EUR	600 MB
4 EUR	1 GB
5 EUR	1.2 GB
6 EUR	2 GB
10 EUR	3 GB
12 EUR	4 GB
16 EUR	5 GB
18 EUR	6 GB
22 EUR	7 GB
25 EUR	8 GB
28 EUR	9 GB
30 EUR	10 GB
35 EUR	11 GB
36 EUR	12 GB
40 EUR	13 GB
42 EUR	14 GB
46 EUR	15 GB
48 EUR	16 GB
52 EUR	17 GB
54 EUR	18 GB
58 EUR	19 GB
60 EUR	20 GB

EU Roaming – Orange Slovakia

You can use your Orange allowances in the following EU/EEA member states without paying roaming fees:

As Orange does not have dedicated EU/EEA roaming allowances, you can use your full allowance without restrictions in other EU/EEA member states.

APN/Internet Settings – Orange Slovakia

• Name: Orange Internet
• APN: internet

Note: leave anything not mentioned above untouched.

Jump back to the Table of Contents.

O2 Slovakia

O2 Slovakia, just O2 but officially O₂, is the third-largest mobile operator in Slovakia.

While the O2 brand is part of Telefónica, a Spanish telecommunications company active in the Americas (as Altice, Movistar & Vivo) and Europe (as Bouygues Telecom, Movistar & O2), O2 in Slovakia is owned by PFF.

It is a Czech-based investment firm that also runs Telenor (officially Norwegian) in Bulgaria, Hungary, Montenegro & Serbia.

O2 uses the following frequencies:

• 2G: 900 MHz & 1800 MHz
• 3G: 900 MHz & 2100 MHz
• 4G/LTE: 800 MHz (Band 20) & 1800 MHz (Band 3)
• 5G NR: 1800 MHz (n3) & 3700 MHz (n78)
• VoLTE: Yes
• VoWiFi: Yes

This is what you will learn about O2

* Coverage
* How to Get an O2 SIM Card & SIM Card Price
* Topping Up Options & Methods + Balance Check
* Plans & Packages
* APN/Internet Settings

Coverage – O2 Slovakia

O2 has the best 4G/LTE availability.

This was also confirmed by Opensignal.

First, we have O2's 2G coverage map:

Below is O2's 3G coverage map:

Here we have O2's 4G/LTE coverage map:

Here we have a map of O2's 2G, 3G & 4G/LTE networks combined:

At last, we have a combined coverage map produced by Speedtest:

SIM Card Price – O2 Slovakia

You can get an O2 SIM card, called Vol'nost', for 2 EUR with 2 EUR credit in O2 stores. SIM cards are not sold at Bratislava-M.R. Štefánik Airport (BTS), but the AVION Shopping Park Bratislava mall near the airport does have an O2 store.

It is also possible to get an O2 eSIM for the same price as a regular SIM card.

Currently, O2 does not have a list of devices that can use its eSIM.

But I suspect the standard Google Pixel, iPhone, Huawei (Mate) P40 (Pro) & Samsung (Galaxy (Note))/Flip can use O2's eSIMs.

Note that O2 offers VoLTE (Voice over LTE (4G)) if your phone supports it and if you have enabled it in the settings.

Oh, you can also use VoWiFi (Voice over WiFi).

O2 SIM cards get deactivated if there has been no activity for 12 months (no top-up for 12 months or no activity for 12 months).

Top-Up, Recharge & Balance Check – O2 Slovakia

O2 top-up vouchers are sold in O2 stores, grocery stores, corner shops & electronics shops throughout Slovakia.

The following (online) O2 top-ups are available:

• 8 EUR
• 10 EUR
• 15 EUR
• 20 EUR
• 30 EUR

To top up your O2 SIM card, dial *133*VoucherCode#.

For example, if your voucher code is 123456, you would dial *133*123456#.

You can also tell the salesperson how much credit you want, your phone number, pay, and they will top up your SIM card with the POS system.

You can also recharge online with debit and credit cards – only Czech Republic- and Slovakia-issued cards are accepted.

Dial *100*# or text SPOTREB to 99222 to check your O2 balance.

You can also top up and check your balance on the Moje O2 SK (My O2 Slovakia) app (Android/iOS).

Packages, Plans, Bundles & Offers – O2 Slovakia

O2 has only one data-featured plan: Dátové Balíky (Data Packages) with 5G NR access.

Although I may have been lucky with 5G NR access, as O2 called it a promotion in one of the text messages they sent me.

However, speeds are restricted to 25 Mbps download and 15 Mbps upload.

On 5G NR, I managed to hit 625.72 Mbps in March 2022.

Text the Activation Code to 99222 to activate Dátové Balíky:

Price	Data	Speed (Down/Up)	Validity	Activation Code
0.75 EUR	500 MB	25 Mbps/15 Mbps	1 day	500MB
1 EUR	1 GB 1	25 Mbps/15 Mbps	1 day	1GB
2 EUR	1 GB	25 Mbps/15 Mbps	7 days	1GB1 A
3 EUR	1 GB	25 Mbps/15 Mbps	28 days	1GB4 A
5 EUR	2 GB	25 Mbps/15 Mbps	28 days	2GB4 A

¹ up to 670 MB can be used in the EU/EEA. All the other plans have no EU/EEA allowance limit

EU Roaming – O2 Slovakia

You can use your Slovak Telekom allowances in the following EU/EEA member states without paying roaming fees:

As O2 does not have dedicated EU/EEA roaming allowances (except for one plan), you can use your full allowance without restrictions in other EU/EEA member states.

APN/Internet Settings – O2 Slovakia

• Name: O2 INTERNET
• APN: o2internet

Note: leave anything not mentioned above untouched.

Jump back to the Table of Contents.

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4ka (by Swan Mobile)

4ka by Swan Mobile is the smallest mobile operator in Slovakia.

Swan also offers fixed broadband services. It started its mobile brand in 2015.

While it still has the worst network, 4ka is the cheapest mobile operator in Slovakia.

4ka uses the following frequencies:

• 2G: 900 MHz & 1800 MHz
• 3G: 900 MHz & 2100 MHz
• 4G/LTE: 1800 MHz (Band 3)
• 5G NR: 1800 MHz (n3) & 3700 MHz (n78)
• VoLTE: Yes
• VoWiFi: No

This is what you will learn about 4ka:

* Coverage
* How to Get a 4ka SIM Card & SIM Card Price
* Topping Up Options & Methods + Balance Check
* Plans & Packages
* APN/Internet Settings

Coverage – 4ka (by Swan Mobile)

4ka has the worst coverage in Slovakia.

However, you will have (mostly 3G) reception almost anywhere.

Below is 4ka's coverage map:

Here we have 4ka's coverage map produced by Speedtest:

SIM Card Price – 4ka (by Swan Mobile)

You can get a 4ka SIM card for 4 EUR with 4 EUR credit in 4ka stores and post offices stores. SIM cards are not sold at Bratislava-M.R. Štefánik Airport (BTS), but the AVION Shopping Park Bratislava mall near the airport does have a 4ka partner store and a post office selling SIM cards.

It is also possible to get a 4ka eSIM for the same price as a regular SIM card.

Currently, 4ka does not have a list of devices that can use its eSIM.

But I suspect the standard Google Pixel, iPhone, Huawei (Mate) P40 (Pro) & Samsung (Galaxy (Note))/Flip can use 4ka's eSIMs.

Note that 4ka offers VoLTE (Voice over LTE (4G)) if your phone supports it and if you have enabled it in the settings but no VoWiFi (Voice over WiFi).

4ka SIM cards get deactivated if there has been no activity for 16 months (no top-up for 16 months or no activity for 16 months).

Top-Up, Recharge & Balance Check – 4ka (by Swan Mobile)

4ka top-up vouchers are sold in 4ka stores, grocery stores, corner shops & electronics shops throughout Slovakia.

The following (online) 4ka top-ups are available:

• 4 EUR
• 8 EUR
• 10 EUR
• 12 EUR
• 15 EUR
• 16 EUR
• 20 EUR
• 30 EUR

To top up your 4ka SIM card, dial *111*VoucherCode#.

For example, if your voucher code is 123456, you would dial *111*123456#.

You can also tell the salesperson how much credit you want, your phone number, pay, and they will top up your SIM card with the POS system.

You can also recharge online with (international/EU) debit and credit cards.

Dial *55# to check your 4ka balance.

You can also top up and check your balance on the Moa 4ka (My 4ka) app (Android/iOS).

Packages, Plans, Bundles & Offers – 4ka (by Swan Mobile)

4ka has one data-featured plan: Sloboda (Freedom). It is a combo plan with data (with 5G NR access), minutes & SMS.

Text the Activation Code to 950 to activate Sloboda:

Price	Plan	Data	EU/EEA Data	Local/EU Minutes	Local/EU SMS	Validity	Activation Code
10 EUR	Sloboda 100+	11 GB	4.33 GB	100 minutes	Shared with call allowance	30 days	S100+
14 EUR	Sloboda 300+	16 GB	4.33 GB	300 minutes	Shared with call allowance	30 days	S300+
22 EUR	Sloboda ∞ +	Unlimited	4.33 GB	Unlimited	Unlimited	30 days	SN+

Sloboda auto-renew. To disable auto-renewal, text STAV to 950.

EU Roaming – 4ka (by Swan Mobile)

You can use your 4ka allowances in the following EU/EEA member states without paying roaming fees:

Be aware that, in some cases, the EU/EEA roaming allowance is lower than the domestic allowances.

APN/Internet Settings – 4ka (by Swan Mobile)

• Name: 4ka Internet
• APN: internet

Note: leave anything not mentioned above untouched.

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The Preferred Way to Stay Connected When Traveling in Slovakia

Getting a SIM card from Slovak Telekom, Orange, or 4k would do you well when considering a Slovak SIM card.