SFR Speed Test - Test Your Connection | Kencang
Test your SFR internet speed in France
www.sfr.frSFR is France's second-largest telecommunications operator with approximately 22 million subscribers across mobile and fixed services. Owned by Altice France, SFR provides fiber broadband with speeds up to 8 Gbps, mobile services on 4G and 5G networks, and triple-play bundles with TV and telephony across mainland France.
About SFR
SFR was founded in 1987 and has grown into one of France's four major telecom operators. Acquired by Altice in 2014, SFR merged with cable operator Numericable to create the largest fiber and cable network in France.
Headquartered in Paris, the company serves residential and business customers through its own fiber-to-the-home network and cable infrastructure using DOCSIS 3.1 technology. SFR also operates a nationwide 4G and 5G mobile network.
SFR Plans and Services
SFR offers several internet plans across different technologies and price points.
SFR fiber plans range from EUR 30.99 to EUR 44.99 per month. The Fibre Power S offers 1 Gbps with 160+ TV channels at EUR 30.99. Fibre Power delivers 2 Gbps with 200+ channels at EUR 36.99.
The premium tier provides 8 Gbps via XGS-PON with the SFR Box 8X at EUR 44.99. All plans include a 12-month commitment. RED by SFR offers a no-commitment fiber option at EUR 20.99 per month with 500 Mbps. SFR also provides 5G mobile plans and fixed-mobile bundle discounts.
SFR Internet Plans
| Plan | Speed | Price | Features |
|---|---|---|---|
| SFR Fibre Power S fiber | 1 Gbps | EUR 30.99/month |
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| SFR Fibre Power fiber | 2 Gbps | EUR 36.99/month |
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| SFR Fibre Premium fiber | 8 Gbps | EUR 44.99/month |
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Prices and availability may vary by location. Contact SFR for current offers.
SFR Coverage by Region
SFR performance varies by location. Coverage density, local infrastructure, and network congestion affect speeds in each market.
Ile-de-France (Paris region)
SFR's cable infrastructure from Numericable covers many buildings in the inner suburbs. XGS-PON available in newer installations.
Rhone-Alpes (Lyon, Grenoble)
SFR competes directly with Bouygues and Free for fiber customers in this region.
Nord-Pas-de-Calais (Lille)
Some older cable areas may be limited to 500 Mbps until upgraded to fiber.
Provence-Alpes-Cote d'Azur (Marseille, Nice)
Marseille has some of France's oldest cable broadband infrastructure, now being upgraded to FTTH.
Is SFR Right for You?
Every provider has trade-offs. Here is how SFR performs based on real-world usage and customer feedback.
Strengths
- Unique cable (DOCSIS 3.1) infrastructure in areas without fiber from Numericable heritage
- RED by SFR offers the cheapest no-commitment fiber in France at EUR 20.99
- 8 Gbps XGS-PON available on the Premium tier with SFR Box 8X
- Speed performance improved nearly 20% year over year in 2025
- 5G Home box available for fixed wireless broadband in fiber-gap areas
- 200+ TV channels included with Power and Premium plans
Weaknesses
- Ranked fourth among French ISPs in nPerf 2025 speed tests at 340 Mbps average
- All SFR plans require a 12-month commitment
- Prices increase after the first-year promotional period
- Parent company Altice France filed for Chapter 15 bankruptcy in 2025
- Customer service reputation has declined in recent years
- Wi-Fi performance trails Bouygues and Free in independent tests
Best For
- Budget users wanting the cheapest fiber via RED by SFR at EUR 20.99
- Users in cable-only areas where SFR's DOCSIS 3.1 network is the main option
- TV enthusiasts wanting 200+ channels included with their fiber plan
- Users wanting to bundle mobile, fiber, and TV with a single provider
Not Ideal For
- Users wanting no-commitment plans - SFR requires 12 months
- Speed-focused users - SFR ranks last among France's four major ISPs
- Customers concerned about financial stability of their ISP
- Users needing strong customer support - SFR scores low in satisfaction surveys
- Those wanting fixed pricing - SFR raises prices after promotional periods
How SFR Compares
Side-by-side comparison of SFR against major competitors in France.
| Competitor | Speed | Price | Coverage | Verdict |
|---|---|---|---|---|
| Bouygues Telecom | Bouygues averages 491 Mbps vs SFR's 340 Mbps in nPerf 2025 tests. Both offer up to 8 Gbps on XGS-PON. SFR improved 20% year over year but still ranks fourth. | SFR Power S starts at EUR 30.99 with commitment. RED by SFR starts at EUR 20.99 without commitment. Bouygues B&You starts at EUR 24.99 without commitment. | SFR has both fiber and cable infrastructure. Bouygues relies on fiber only. In some buildings, SFR cable provides the only high-speed option. | Choose Bouygues for better speed performance. Choose RED by SFR for the absolute cheapest fiber option in France. |
| Free | Free averages 451 Mbps download vs SFR's 340 Mbps. Free leads in upload at 326 Mbps vs SFR's 267 Mbps. Both offer 8 Gbps maximum. | Free starts at EUR 24.99 with no commitment. SFR starts at EUR 30.99 with commitment. RED by SFR at EUR 20.99 is cheaper but offers only 500 Mbps. | Free and SFR cover similar areas. SFR has additional cable coverage from Numericable. Free uses SFR's infrastructure in some zones under regulated access. | Choose Free for better speeds and streaming bundles. Choose RED by SFR only for the lowest possible price at EUR 20.99. |
| Sosh | Sosh offers up to 2 Gbps on Orange FTTH. SFR offers up to 8 Gbps on XGS-PON but averages only 340 Mbps in real tests. Sosh benefits from Orange's consistent network. | Sosh is EUR 24.99 with no commitment. SFR starts at EUR 30.99 with commitment. RED by SFR at EUR 20.99 is the cheapest option. | Sosh on Orange has the widest coverage in France. SFR has additional cable-only areas. In most locations, both are available. | Choose Sosh for network reliability and no commitment. Choose RED by SFR for the lowest monthly price. |
Troubleshooting SFR Issues
Common SFR connection problems and how to fix them.
SFR Box Wi-Fi speeds are much slower than wired ethernet speeds
Cause: The SFR Box may be using congested Wi-Fi channels, or the 5 GHz band is not enabled. Wi-Fi 6E is only available on the SFR Box 8X.
- Log into the SFR Box admin panel at 192.168.1.1 and enable both 5 GHz and 6 GHz bands
- Switch to a manual Wi-Fi channel to avoid congestion from neighboring networks
- Place the SFR Box in a central location away from walls and electronic devices
- Connect bandwidth-heavy devices via ethernet for maximum speed
- Request a SFR Wi-Fi repeater if your home has dead zones
Cable broadband connection drops intermittently in areas using DOCSIS 3.1
Cause: Coaxial cable signal degradation or splitter issues in the building wiring. Peak-hour congestion can also affect cable connections.
- Check all coaxial cable connections for tightness and corrosion
- Remove any unnecessary cable splitters between the wall outlet and the SFR Box
- Restart the SFR Box by unplugging power for 30 seconds
- Test speeds during off-peak hours to determine if congestion is the cause
- Contact SFR at 1023 to request a technician check on the coaxial signal level
RED by SFR fiber activation takes longer than the promised timeline
Cause: Fiber installation requires a technician visit and building infrastructure may need additional work.
- Check activation status in the RED by SFR app or at red-by-sfr.fr
- Verify that your building has fiber infrastructure installed to the premises
- Contact RED by SFR support via chat in the app for a status update
- If no technician appointment appears within 2 weeks, file a complaint through the app
SFR History
Key milestones in SFR development and network expansion.
SFR founded by Compagnie Generale des Eaux (CGE) to operate France's first analog mobile network
SFR becomes France's second mobile operator to launch 2G GSM services
CGE restructures SFR into SFR-Cegetel holding company
Vodafone sells its 44% share in SFR back to Vivendi
Altice and Numericable acquire SFR from Vivendi, creating France's largest cable and fiber operator
Numericable-SFR rebrands as SFR Group under full Altice ownership
Altice completes public takeover of SFR Group, delisting it from the stock exchange
Launches RED by SFR as the main no-commitment digital brand for budget customers
Altice France files for Chapter 15 bankruptcy protection while SFR continues operations
Test Your SFR Speed
Run a free speed test to check if SFR delivers the speeds you are paying for. Test during peak evening hours for the most realistic results. Compare your results against SFR advertised speeds above.
SFR Speed Test FAQ
How fast is SFR fiber internet?
SFR fiber delivers speeds up to 8 Gbps download on XGS-PON technology with the Premium plan. The Power S plan offers 1 Gbps, while Power provides 2 Gbps. SFR also operates cable broadband using DOCSIS 3.1 in some areas, delivering up to 1 Gbps. Actual speeds depend on your connection type, router capabilities, and whether you use ethernet or Wi-Fi. Areas with XGS-PON coverage get the fastest speeds.
What is the difference between SFR and RED by SFR?
SFR offers premium triple-play bundles with TV channels, phone calls, and higher speeds with a 12-month commitment. RED by SFR is the low-cost brand offering internet-only plans without commitment at lower prices starting at EUR 20.99 per month. RED plans do not include TV channels or a TV decoder. Both brands use the same SFR fiber and cable network, so internet quality is identical. Choose SFR for TV and bundles or RED for basic internet.
Does SFR have 5G coverage in France?
SFR operates a 5G network covering major cities and expanding to suburban areas across France. SFR's 5G uses 3.5 GHz spectrum for high-speed coverage. Mobile plans with 5G access are available starting at EUR 25 per month. SFR also offers 5G Home boxes for fixed wireless access in areas without fiber coverage. Check SFR's coverage map on their website to verify 5G availability at your address.
How do I test my SFR internet speed?
Use the speed test on this page to measure your SFR download speed, upload speed, and latency. For accurate results on fiber, connect via ethernet to the SFR Box router. On cable connections, test at different times since speeds can vary during evening peak hours. Close streaming applications and downloads before testing. The test takes approximately 30 seconds and measures your real connection performance against your plan speeds.