O2 Telefónica DE review

Updated September 28, 2026 · NomadCue Editorial Team · Facts checked September 26, 2026

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Our verdict

O2 Telefónica DE is a German carrier selling its own prepaid data and roaming bundles, so it fits travellers already in the country who want one operator plan rather than a marketplace eSIM. Coverage spans 27 to 32, with unlimited data and hotspot sharing on the same plan.

Key facts

Best for
A prepaid carrier plan with unlimited data and hotspot sharing for trips in and beyond Europe.
Price from
€9.99↗
Price per GB from
€0.50↗
Countries covered
27 to 32↗
Unlimited data
Yes↗
Hotspot sharing
Yes↗
Reference plan prices
Europe: 20 GB / 4 weeks EUR 9.99, 50 GB / 4 weeks EUR 14.99, 100 GB / 4 weeks EUR 19.99, 999 GB / 4 weeks EUR 74.99; World: Roaming Plus World Pack 2 GB↗
5G
Yes↗
Fair use policy
EU Fair Use Policy surcharges in World Zone 1 on excessive use; after the included data the speed drops to 1 Mbit/s download↗
Networks
Telefónica (o2)↗
Top-ups
Yes↗
Seller type
Carrier↗
Legal entity
Telefónica Germany GmbH & Co. OHG↗
Headquarters
Germany↗
Support channels
Email, Chat, Phone, Help-centre, Community↗
Region
Regional, Global
Features
Unlimited data, 5G, Hotspot, Instant activation, Carrier plan
Pricing model
Budget
Audience
Short trips, Long trips
Official website
telefonica.de

Facts checked September 26, 2026, 7 sources

Apps and profiles

Pros and cons

Pros

  • Unlimited data and hotspot sharing come on the same plan, and unlimited data, 5g and hotspot lists both with instant activation.
  • Top-ups are available, so a plan can be extended during a trip instead of being replaced.
  • Support runs on email, chat and phone, from phone help to a self-service help centre.
  • Sold as a carrier plan from Telefónica Germany GmbH & Co. OHG, so the service comes straight from the network operator.

Cons

  • Coverage of 27 to 32 is far narrower than Zwitchy at 200.
  • The fair use policy still bites: surcharges can apply in the top world zone for excessive use, and download speed is throttled after the included data is used up.
  • The entry price of €9.99 sits well above most listings on the site, which works against a brief trip that needs only a few days of data.
O2 Telefónica DE

Ready to try O2 Telefónica DE?

Scored 9.1 / 10 by NomadCue.

Who it suits

  • Travellers in Germany who want a prepaid SIM from the operator rather than a marketplace eSIM.
  • Short trips and longer stays alike, since short trip and long trip covers both.
  • People who need unlimited data and hotspot sharing for work on the move.

Who should look elsewhere

  • Travellers who need worldwide reach, since Zwitchy covers 200 countries against 27 to 32 here.
  • Shoppers after the lowest starting price, because eSIMGo.is begins at $0.99.
  • Anyone covering a single market only, who may prefer SimToIsrael at $25.

Where it sits among rivals

O2 Telefónica DE ranks 214 of 313 on starting price, which puts the entry plan in the dearer part of the listings. On price per GB it ranks 15 of 115, so the data itself is priced more competitively than the headline price suggests.

How O2 Telefónica DE compares

Where O2 Telefónica DE is available

Available
Germany

Countries from the brand (Source, checked September 26, 2026)

Frequently asked questions

How much do the plans cost?+

Plans start at €9.99, and price per GB from €0.50 is the figure to compare against other listings. Reference Europe bundles step up through several data sizes at higher prices, so a bigger allowance costs more. A roaming pack for worldwide use is sold alongside the Europe plans.

How long does the data stay valid?+

Reference Europe packs are sold for a set period, with each pack carrying its own data allowance and the pack size setting both price and data. short trip and long trip covers short trips and longer stays, so the range suits a quick city break as well as a longer trip.

Is the data really unlimited?+

Unlimited data is offered, with unlimited data, 5g and hotspot listing it alongside hotspot sharing. The fair use policy still applies: surcharges can be raised in the top world zone for excessive use, and download speed drops once the included data is used up. Read the unlimited label as generous rather than unthrottled.

Can I share the connection with a laptop?+

Hotspot sharing is available, and unlimited data, 5g and hotspot lists it alongside unlimited data and instant activation. Because the allowance is generous, tethering a laptop or tablet is workable, though the same fair use rules apply once the included data runs out.

How many countries does it cover?+

Coverage runs to 27 to 32, and regional and global marks the plans as both regional and global. Networks run on Telefónica (o2), so the service is a home network rather than a resold eSIM. For a much wider footprint, Zwitchy lists 200.

Who is this plan for?+

It suits travellers who want a plan from the network operator itself, since carrier and budget both point that way. Support comes through email, chat and phone, and top-ups are available, so a plan can be extended once it runs low. Buyers shopping purely on the lowest starting price can find cheaper listings, such as eSIMGo.is at $0.99.

How do I get set up, and where does help come from?+

Because it is a carrier selling its own prepaid plans, the SIM comes from Telefónica Germany GmbH & Co. OHG rather than a marketplace seller, and unlimited data, 5g and hotspot lists instant activation. Help runs on email, chat and phone, from phone and chat to email and a self-service help centre.

Sources

Compiled from 7 source pages, checked September 26, 2026. We did not open an account.

O2 Telefónica DE

O2 Telefónica DE

A prepaid carrier plan with unlimited data and hotspot sharing for trips in and beyond Europe.

9.1/10See alternatives