congstar review
Updated September 28, 2026 · NomadCue Editorial Team · Facts checked September 26, 2026
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Our verdict
congstar suits you if you want a German network you can trust at home rather than a travel eSIM. It is an MVNO from Telekom Deutschland GmbH with 5G, instant activation and top-ups, at prices of €15.
Key facts
- Best for
- A home mobile plan in Germany on the Telekom D-Netz.
- Price from
- €15↗
- Unlimited data
- No↗
- 5G
- Yes↗
- Fair use policy
- Data allowance starts at 10 GB in year 1 and grows 1 GB per year; speed limited to 50 Mbit/s, 100 Mbit/s with the 5G Speed Option (3 EUR/month)↗
- Networks
- Telekom D-Netz↗
- Top-ups
- Yes↗
- Seller type
- Mvno↗
- 10 GB in Europe
- €15↗
- Legal entity
- Telekom Deutschland GmbH↗
- Headquarters
- Germany↗
- Support channels
- Email, Chat, Phone, Help-centre, Community↗
- Region
- Local, Regional
- Features
- 5G, Instant activation, Carrier plan
- Official website
- congstar.de
Facts checked September 26, 2026, 3 sources
Pros and cons
Pros
- Runs on Telekom D Netz, the Telekom D-Netz in Germany
- Prices of €15 for the plan listed, and €15 for the data package
- 5G, instant activation and a carrier plan, all listed under 5g, instant activation and carrier plan
- Top-ups are available, so you can add credit when you need it
Cons
- Unlimited data is not offered, so heavy data use needs a bigger allowance
- Speed is capped under the fair use policy, with higher limits only on the 5G Speed Option for a monthly fee
Who it suits
- People in Germany who want a local plan rather than a travel eSIM
- Readers who value a long-standing carrier network over a wide country list
- Anyone comfortable with a fair use policy that grows the allowance year by year
Who should look elsewhere
- Travellers heading abroad, since the plan covers a single market
- Data hungry users, because unlimited data is not available
- Short trips on a budget, since €15 is a monthly home plan price
How congstar compares
8.8 vs 9.38.8 vs 9.3
8.8 vs 8.58.8 vs 9.3
8.8 vs 9.5
8.8 vs 8.08.8 vs 9.2
8.8 vs 9.0
8.8 vs 8.9
8.8 vs 9.5
8.8 vs 8.5
8.8 vs 9.3
8.8 vs 8.98.8 vs 8.8
8.8 vs 9.2
- 8.8 vs 9.6
- 8.8 vs 9.5
8.8 vs 9.5
8.8 vs 9.3
8.8 vs 9.3
8.8 vs 9.28.8 vs 9.2
- 8.8 vs 9.2
8.8 vs 9.1- 8.8 vs 9.1
- 8.8 vs 9.1
8.8 vs 9.0
8.8 vs 8.8- 8.8 vs 8.7
8.8 vs 8.68.8 vs 8.6
Where congstar is available
- Available
- Germany
Countries from the brand (Source, checked September 26, 2026)
Frequently asked questions
How much does congstar cost?+
The plan listed starts at prices of €15 per month, and the data package is €15. That is a home mobile price rather than a per-trip charge, so the cost side is easier to weigh against a monthly budget than against a holiday total.
Which network does congstar run on?+
congstar runs on Telekom D Netz, and it is an MVNO of Telekom Deutschland GmbH in Germany. The plan is a local and regional one, local and regional, so it is built for use inside Germany rather than for a multi-country trip.
Does congstar offer unlimited data?+
Unlimited data is not offered. The fair use policy starts the data allowance at a set level in the first year and adds a small amount each year, with speed limited under that policy, and higher speeds only on the 5G Speed Option for a monthly fee.
Is 5G included?+
Yes, 5G is included. Alongside it, the feature list records instant activation and a carrier plan, 5g, instant activation and carrier plan, which suits people who would rather activate a plan on a carrier network than manage a travel eSIM.
Can I top up the account?+
Yes, top-ups are available. That makes it easier to handle a month with heavier data use than usual without changing the whole plan, and it pairs well with the data package priced at €15.
How do I get help?+
Support runs through email, chat and phone, so you can pick email, chat, phone, a help centre or the community depending on the question. A phone line is the quickest route for anything urgent, and the help centre covers the routine cases.
Who is congstar for?+
It suits people living in Germany who want a local plan on the Telekom D-Netz with 5G and top-ups. It does not suit travellers abroad, since the coverage is a single market, and the price of €15 is a monthly home plan figure.
Sources
- congstar.de checked September 26, 2026
Backs: Top-ups
“Prepaid-Karte aufladen; Prepaid-Guthaben aufladen”
- congstar.de/handytarife/allnet-flat-tarife/allnet-flat-xs checked September 26, 2026
Backs: Fair use policy, Features, 5G, Networks, 10 GB in Europe, Price from, Region, Support channels, Unlimited data
“5G D-Netz Qualität”
- congstar.de/impressum checked September 26, 2026
Backs: Headquarters, Legal entity, Seller type
Compiled from 3 source pages, checked September 26, 2026. We did not open an account.
Not confirmed yet: Price per GB from, Countries covered, Hotspot sharing.