O2 eSIM — coverage, plans & network
Europe — O2 is among the networks on AviaeSIM's Slovakia plans
Key highlights
- A brand used by separate operators in Germany, the UK, Slovakia and the Czech Republic
- O2 Slovakia eSIM works with prepaid and postpaid services; free with a new plan in the O2 app
- In an O2 shop the eSIM is issued as a printed QR card for a fee from the price list (about €10 per Slovak tech press)
- AviaeSIM's Slovakia plans use local networks including O2, with no shop visit
About the operator
O2 is one of Europe's best-known mobile brands, and since 2002 the name has been used by several separate operators: O2 Germany belongs to Telefónica, O2 UK is now part of Virgin Media O2, and O2 Slovakia and O2 Czech Republic belong to the PPF group. O2 is one of the local networks listed on AviaeSIM's Slovakia plans, so this page uses O2 Slovakia as the worked example; AviaeSIM's Germany plans list O2/Eplus and have their own O2/Eplus operator page.
O2 Slovakia's eSIM is a clear case: it works with prepaid as well as postpaid plans, is free with a new plan ordered in the O2 app, and otherwise is issued in an O2 shop for a fee from the price list. The travel alternative — an eSIM installed before you fly — skips the shop.
- Founded
- 2002
- Headquarters
- Bratislava (O2 Slovakia)
- Group
- PPF Group (O2 Slovakia); O2 Germany belongs to Telefónica
- Network
- 4G, 5G
- Subscribers
- ~45M mobile lines (O2 Germany)
How to get the official O2 eSIM: price, QR code, registration
O2 Slovakia's eSIM pages are specific. You can use an eSIM with both invoiced (postpaid) and prepaid services. If you order a new plan in the O2 mobile app you can order the eSIM free of charge, and it is installed on the phone and activated as soon as the order is completed. Otherwise you visit an O2 shop and ask for a new eSIM, or for a swap from a plastic SIM to an eSIM; there you receive a card with the QR code printed on it, and the issue is charged according to the current price list — Slovak tech press put the shop price at €10. Slovak guides say the line is registered to an identity document. O2 Germany and O2 UK run their own eSIM procedures for their own customers.
AviaeSIM's prepaid Slovakia eSIM uses local networks including O2 — the plan card lists O2 and Orange — and is priced per trip: pay by card, receive the QR code by email in minutes, install before the flight and connect in Bratislava with no shop, no registration and no local top-up.
O2 local SIM vs AviaeSIM
| O2 Slovakia prepaid eSIM | AviaeSIM travel eSIM (Slovakia) | |
|---|---|---|
| Price per GB | Prepaid packs priced in euros per month; the eSIM is free with a new plan in the app, otherwise charged per the price list (about €10 in a shop) | Plans for Slovakia from $1.40; the price per GB is on each plan card |
| Activation | App: installed and active at once with a new plan; shop: a printed QR card to scan | QR code by email; installed in the phone's settings in about two minutes |
| Passport registration | Required — the line is registered to an identity document | None; only an email address at checkout |
| Validity | Monthly cycles built for residents | Fixed validity per plan, counted from the first connection in the country |
| Support | O2 shops, the O2 app and call centre, in Slovak | AviaeSIM support by email, before and during the trip |
| Best for | Stays of a month or more, or a local number for calls | Short visits — landing connected without a shop visit |
Checked 26 September 2026 on o2.sk (eSIM page and the support article on getting an eSIM); the €10 shop price comes from Slovak tech press, not O2's page — confirm in the shop.
Network & technology
O2 Slovakia runs 4G across the country — Bratislava, Košice, the High Tatras resorts and the D1 motorway — with 5G in the larger cities. AviaeSIM's Slovakia plans use local networks including O2 — the plan card lists O2 and Orange — so check the card if you want a particular network.
Reputation & market position
In Slovakia O2 is the third operator after Slovak Telekom and Orange and is known for simple prepaid pricing and an app-first approach — the free eSIM with a new plan ordered in the app is typical. The practical friction for visitors is registration: a local SIM or eSIM is registered to an identity document, and the shop or the app expects a local address.
Pros
- eSIM available for prepaid and postpaid plans in Slovakia
- Free eSIM when a new plan is ordered in the O2 app; installed and active immediately
- Country-wide 4G with 5G in the cities
Cons
- In a shop the eSIM is charged per the price list, about €10 according to Slovak tech press
- Registration to an identity document, and the app is built for residents
- Each O2 country is a separate operator — a Slovak O2 eSIM is not a German one
Available plans
Countries covered
Get your Slovakia eSIM from AviaeSIM — instant QR activation, no roaming fees.
How to activate
- 1Choose your destination and a plan on the O2 network
- 2Pay and receive your eSIM QR code by email
- 3Scan the QR code in your phone's settings to install it
- 4Turn on data roaming for the eSIM when you arrive
Frequently asked questions
Does O2 have an eSIM?
Yes. O2 Slovakia issues eSIMs for prepaid and postpaid services — free with a new plan ordered in the O2 app, or in an O2 shop as a printed QR card for a fee from the price list. O2 Germany and O2 UK are separate operators with their own eSIM procedures for their customers.
How much does an O2 eSIM cost?
In Slovakia the eSIM is free when you order a new plan in the O2 app; in a shop it is charged per the current price list, which Slovak tech press puts at €10. AviaeSIM's Slovakia plans, on local networks including O2, are priced per trip on the plan cards with nothing extra for the eSIM.
Can I get an O2 eSIM online as a visitor?
The O2 app route is for new O2 plans registered to a resident's identity document, so a visitor usually ends up in a shop. If you want to land in Bratislava already connected, AviaeSIM's Slovakia eSIM, on local networks including O2, is bought online, delivered by email and needs no registration.
How do I get the O2 eSIM QR code?
In the O2 app the eSIM installs itself once the order is complete — no code to scan. In a shop you receive a card with the QR code printed on it and scan it under Settings → Mobile Data → Add eSIM. An AviaeSIM QR code arrives in your confirmation email and account and installs the same way.
Does an O2 Slovakia eSIM work in Austria, the Czech Republic or Hungary?
As an EU SIM it roams in the EU at Slovak rates under the roam-like-at-home rules, within O2's fair-use limits. An AviaeSIM plan that lists those countries — the regional Europe eSIM — covers a Bratislava–Vienna–Prague–Budapest route on one profile without a Slovak contract.
Useful links
Other operators
Information updated: 2026-09