Congstar Speed Test - Check Mobile & DSL Speed Germany
Test your Congstar internet speed in Germany
www.congstar.deCongstar is Deutsche Telekom's budget brand offering affordable mobile and DSL services on the Telekom network. With flexible plans starting at €22 per month and no long-term contracts, Congstar targets price-conscious customers. Test your Congstar connection to measure actual download, upload, and latency performance.
About Congstar
Congstar was founded in 2007 as a discount brand of Deutsche Telekom AG. Headquartered in Cologne, the company operates as a mobile virtual network operator (MVNO) using Telekom's network infrastructure. Congstar offers prepaid and postpaid mobile plans, DSL internet, and home internet via 4G/5G Homespot.
The brand focuses on simple, affordable tariffs with month-to-month flexibility. As a Telekom subsidiary, Congstar customers benefit from the same network quality as Telekom but at lower prices.
Congstar Plans and Services
Congstar offers several internet plans across different technologies and price points.
Congstar mobile plans range from €22 to €30 per month. Allnet Flat M offers 20 GB data at €22 with 4G speeds, while Allnet Flat L provides 35 GB with 5G access at €30. Congstar Homespot delivers 4G/5G home internet at €30 per month with 100 GB data. DSL plans start at €30 for 50 Mbps. All plans can be booked monthly without minimum contract. Data passes available for extra volume when needed.
Congstar Internet Plans
| Plan | Speed | Price | Features |
|---|---|---|---|
| congstar Homespot mobile | 100 Mbps | €30/month |
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| congstar DSL 50 dsl | 50 Mbps | €30/month |
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| congstar Allnet Flat M mobile | 50 Mbps 4G | €22/month |
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| congstar Allnet Flat L mobile | 50 Mbps 5G | €30/month |
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Prices and availability may vary by location. Contact Congstar for current offers.
Congstar Coverage by Region
Congstar performance varies by location. Coverage density, local infrastructure, and network congestion affect speeds in each market.
North Rhine-Westphalia
Congstar headquarters in Cologne. Strongest brand awareness in NRW.
Bavaria
Homespot popular in Bavarian rural areas lacking DSL.
Berlin
Strong 5G rollout in Berlin improves Congstar 5G plan performance.
Is Congstar Right for You?
Every provider has trade-offs. Here is how Congstar performs based on real-world usage and customer feedback.
Strengths
- Uses full Deutsche Telekom mobile network - same towers, same coverage
- No minimum contract on most plans - monthly cancellation available
- Budget pricing starting at 22 EUR per month for mobile with allnet flat
- 5G access included on Allnet Flat L plans at 30 EUR
- Over 7 million subscribers and 1 billion EUR annual revenue as of 2024
- Voted number one mobile provider by Connect magazine readers 13 years running
- Homespot provides home internet without a fixed phone line
Weaknesses
- Mobile speeds capped at 50 Mbps on 4G plans - slower than Telekom retail
- DSL limited to 50 Mbps maximum - no VDSL 100 or 250 Mbps options
- Homespot has 100 GB data cap per month - not unlimited
- No fiber broadband plans available
- Limited premium features compared to Telekom branded tariffs
Best For
- Budget-conscious mobile users wanting Telekom network quality at lower prices
- Students and young adults needing flexible month-to-month plans
- Users in rural areas without DSL who can use 4G/5G Homespot
- Prepaid customers wanting no-commitment data and voice
- Households needing basic 50 Mbps DSL at 30 EUR per month
Not Ideal For
- Power users needing speeds above 50 Mbps on DSL
- Heavy data users - Homespot has monthly caps
- Households wanting fiber or cable gigabit speeds
- Users needing premium support with priority service queues
How Congstar Compares
Side-by-side comparison of Congstar against major competitors in Germany.
| Competitor | Speed | Price | Coverage | Verdict |
|---|---|---|---|---|
| 1und1 | Congstar DSL maxes at 50 Mbps. 1&1 DSL reaches 250 Mbps and Glasfaser 1 Gbps. | Congstar DSL 50 costs 30 EUR. 1&1 DSL 50 costs 29.99 EUR with FRITZ!Box included. | Similar DSL footprint via Telekom network. 1&1 adds fiber where available. | Choose Congstar for simple budget mobile. Choose 1&1 for faster broadband and included router. |
| Telekom | Congstar mobile capped at 50 Mbps on 4G. Telekom mobile offers up to 300 Mbps on 5G. | Congstar Allnet Flat L costs 30 EUR. Telekom MagentaMobil L costs 54.95 EUR. | Identical mobile network coverage. Both use Telekom towers and spectrum. | Choose Congstar if budget matters most. Choose Telekom for faster mobile speeds and premium perks. |
Troubleshooting Congstar Issues
Common Congstar connection problems and how to fix them.
4G mobile speeds only reaching 10-20 Mbps instead of 50 Mbps
Cause: Network congestion, weak signal, or device connected to 3G instead of 4G.
- Check signal strength and move to a location with better reception
- Force your device to connect to 4G/LTE in network settings
- Restart your phone to re-register on the nearest cell tower
- Check if your data volume is exhausted - speeds throttle after limit
- Contact Congstar support via the app or hotline
Homespot router delivering speeds well below 100 Mbps
Cause: Weak 4G/5G signal at router location or too many connected devices.
- Place the Homespot router near a window on the side facing the nearest cell tower
- Reduce the number of connected devices
- Check if 5G is available at your location for faster speeds
- Test at different times to identify peak congestion hours
- Contact Congstar to check if a network issue exists in your area
DSL connection showing 30 Mbps instead of the 50 Mbps plan speed
Cause: Copper line distance from the DSLAM limits actual sync rate.
- Connect via ethernet cable to eliminate WiFi as the cause
- Check the router admin page for the DSL sync rate
- Restart the router and wait for line re-synchronization
- Contact Congstar to request a line check from Telekom
Congstar History
Key milestones in Congstar development and network expansion.
Launched in July as Deutsche Telekom's budget mobile brand in Cologne
Introduced DSL broadband plans using Telekom fixed-line infrastructure
Reached 2 million mobile subscribers
Launched Homespot 4G home internet product for areas without fixed broadband
Surpassed 5 million subscribers across mobile and DSL
Introduced 5G access on selected tariffs using Telekom 5G network
Crossed 7 million subscribers and 1 billion EUR annual revenue for the first time
Mobile Data Settings
Need to configure your Congstar mobile data? View the complete APN settings for Android and iOS devices.
View Congstar APN SettingsTest Your Congstar Speed
Run a free speed test to check if Congstar delivers the speeds you are paying for. Test during peak evening hours for the most realistic results. Compare your results against Congstar advertised speeds above.
Congstar Speed Test FAQ
How fast is Congstar internet?
Congstar mobile uses Telekom's 4G and 5G network with maximum speeds of 50 Mbps on 4G plans and up to 100 Mbps on 5G plans. Congstar DSL offers up to 50 Mbps download via the Telekom fixed network. Homespot 4G/5G provides up to 100 Mbps. Actual speeds depend on network conditions and location. Run a speed test to check your real Congstar connection performance.
Does Congstar use the Telekom network?
Yes, Congstar is a subsidiary of Deutsche Telekom and uses the full Telekom mobile network. Congstar customers access the same cell towers and coverage as Telekom customers. DSL services also run on Telekom infrastructure. The main difference is pricing and service features. Congstar offers lower prices but fewer premium features compared to Telekom branded plans.
How do I test my Congstar speed?
Use the speed test tool on this page to measure your Congstar download speed, upload speed, and ping latency. For mobile testing, ensure you have good signal strength and disable WiFi to test cellular data. For DSL, connect via ethernet cable for accurate results. The test takes approximately 30 seconds to complete.
What is Congstar Homespot?
Congstar Homespot is a 4G/5G home internet solution that works without a fixed telephone line. The service includes a portable router that uses Telekom's mobile network to provide home broadband. Plans offer 100 GB data at €30 per month with speeds up to 100 Mbps. Homespot is ideal for areas without DSL coverage or for customers who need flexible, portable internet.