To check if your internet service is down, try a second device, turn off WiFi on your phone, and compare what works on mobile data. If several devices lose access through the same connection while mobile data works, check your provider’s outage information and contact support; the problem could still be inside your home or business until the provider confirms it. In 2026, a failed website or speed test alone does not establish a service outage.
- How to check if internet is down: test another device, then compare WiFi with mobile data.
- If one device fails but others work, check that device before reporting an outage.
- If every device fails, inspect the router and connection before contacting your provider.
- SumoFiber fiber internet customers should ask SumoFiber support to confirm whether their address is affected.
Why this matters
A video call that freezes and a TV that stops streaming can look like the same problem. They are not enough to tell you whether the fault is with one app, your WiFi, your equipment, or the connection outside your building. If pages load but feel slow, use speed test and WiFi troubleshooting steps instead of treating a slow connection as a complete outage.
The useful question is not just whether the internet works. It is where the connection stops working. That distinction helps you choose a fix and gives support a clearer report if you need to call.
How do I check if my internet service is down?
Start with a comparison, not a router restart. In 2026, the quickest way to narrow the problem is to see whether it follows a device, a WiFi connection, or the service connection used by every device.
| What you observe | What it points to | What to do next |
|---|---|---|
| One app or website fails, but others work | A problem with that app, site, or its connection | Try another site and check whether the affected service has reported an issue |
| One device fails, but another works on the same WiFi | A problem on the affected device | Check its WiFi connection and restart that device |
| All WiFi devices fail, but a wired device works | A WiFi problem rather than a complete loss of service | Check the router or WiFi equipment |
| Wired and WiFi devices both fail, but mobile data works | A problem with your equipment or fixed internet connection | Check equipment, then ask your provider to verify service |
| Mobile data fails too | A separate mobile issue is also possible | Do not use mobile data alone as proof of a fixed-line outage |
The table identifies the next check; it does not confirm the cause. Your provider can tell you whether it has identified a service issue affecting your connection. A failed test on one phone cannot.
Check another device
Open a familiar website on a second phone, laptop, or tablet connected to the same WiFi. If the second device works, focus on the first device. Confirm that it joined the intended WiFi network, then restart it and try again.
Use more than one website or app. If a browser opens pages while a single streaming app fails, your internet connection is still passing traffic. That app needs its own check.
Test mobile data
On your phone, turn WiFi off and load the same website over mobile data. If it works on mobile data but not on home WiFi, the problem is tied to the WiFi or fixed internet connection. If it fails on both, try a different site before drawing a conclusion.
Mobile data is a comparison path, not a substitute for an outage notice. It tells you whether your phone can reach the site another way; it does not identify a fault in the line serving your address.
Inspect equipment
Check that the router and any separate fiber or internet equipment have power. Look for a loose power cable or a cable that has been unplugged. If you recently moved equipment, check the connections you can reach without opening a box or handling a damaged cable.
If you restart equipment, use its normal power control or follow your provider’s instructions. Avoid a factory reset while diagnosing an outage: it can erase settings without fixing a problem outside your building. If the equipment has an alert light, record what you see before you contact support; light meanings differ by model.
Check outage reports
Look for an official notice from your provider, if one is available, and check whether it names your area or address. Reports from neighbors can help show that the issue extends beyond your building, but they do not establish that the same fault affects every address.
For SumoFiber fiber internet, use SumoFiber as the starting point for service information, then ask support to check your connection if you cannot find a clear answer. Say which devices failed and whether a wired connection worked; those details are more useful than reporting that WiFi is down.
Contact your provider
Contact your provider when multiple devices cannot get online after you have checked power and connections, or when equipment shows an alert you cannot resolve. Give your service address and describe the tests you completed. Ask whether the provider has confirmed a wider outage or needs to troubleshoot your individual connection.
Do not wait for a public outage notice if a business connection is stopping work. A fault can affect one address without appearing on a broader status report.
The checks work best in this order because each one removes a possible cause before you change equipment settings.
What if WiFi says connected but nothing loads?
Connected to WiFi does not mean connected to the internet. It means your device has joined the local wireless network. Your router can keep broadcasting WiFi even when its outside connection is not working.
First, try another website and another device on the same network. If both fail, check whether a device connected by Ethernet also fails. A working wired connection shifts attention to WiFi; a failed wired connection means the problem is not limited to the wireless signal. If you do not have a wired device, leave that test out rather than assuming the result.
If your router offers 2.4 GHz, 5 GHz, or 6 GHz WiFi bands, a failure on one band is another reason to check a second device or connection. These are WiFi frequencies, not separate internet services. Switching bands can help isolate a wireless problem, but it cannot restore an outside connection that is down.
A phone can also switch to mobile data while WiFi appears connected. Turn mobile data off briefly when testing WiFi if your phone allows it and you can do so safely. Otherwise, you might think the fixed connection works when the page actually loaded through your mobile plan.
Why the answer varies from one connection to another
In 2026, the same message on a screen can point to different faults. These factors change what your test result means:
- The number of affected devices. One failed device points you toward that device; failures across several devices point toward shared equipment or the service connection.
- The connection method. If Ethernet works and WiFi does not, test the wireless network before reporting a complete internet outage.
- The site or app you chose. One unavailable service is not evidence that all internet access has stopped.
- The equipment path. A router can have power and broadcast WiFi while the outside connection is unavailable.
- The address affected. A neighbor’s report adds context, but your provider must check whether the same issue affects your service address.
- The fallback connection. Mobile data uses a different connection from fixed internet, so it gives you a useful comparison without proving the cause of the fixed-line failure.
None of these checks requires you to guess what a particular equipment light means. Record its color or pattern and describe it to support if the meaning is not clear from the equipment instructions.
How can I tell whether it is my router or the provider?
You cannot confirm that distinction from WiFi status alone. If every device fails, check equipment power and connections, then ask the provider to test or verify the service at your address. A provider-confirmed outage answers a different question from a router that merely shows an internet alert.
If you have a separate router and internet connection box, note which device has the alert before you call. Do not disconnect cables at random to find out which one is at fault. Your report should cover what works, what fails, and what changed before the failure.
Is it an outage if my internet is just slow?
No: slow internet and a complete outage are different symptoms. If pages eventually load or a video call connects with interruptions, the connection is still working in some form. Check whether the slowdown affects one device, WiFi-only devices, or wired devices too.
A speed test can document a slow connection, but one result cannot explain its cause. Run the test from the connection you are trying to diagnose, record whether it was wired or wireless, and tell support what everyday task failed. A speed figure without that context can send troubleshooting in the wrong direction.
What should I do if the internet drops during work?
Switch to a working connection for urgent tasks, then diagnose the failed one. If mobile data works, it can keep a phone online while you check the fixed connection. Do not assume a laptop will switch automatically; that depends on how it is connected and configured.
For a business, note whether the issue affects staff devices, guest WiFi, or both. If a wired checkout or office device still works while wireless devices fail, tell support that. SumoFiber provides business internet and managed WiFi, so distinguishing the service connection from WiFi is relevant when reporting the problem; neither service name alone identifies the fault.
FAQ
How do I check if my internet is down or just my WiFi?
Test another device and, if available, a wired connection. If Ethernet works while WiFi devices fail, focus on WiFi rather than a complete service outage.
Does a connected WiFi symbol mean my internet is working?
No. The symbol shows that your device joined a wireless network; the connection from that network to the internet can still fail. Open more than one website to check access.
Why does one website fail when everything else works?
A single failed website does not establish an internet outage. Try another site or app, then check whether the affected service has reported a problem.
Can I check an outage without WiFi?
Yes. Turn WiFi off on a phone with working mobile data and check your provider’s service information or contact support. Mobile access helps you investigate but does not confirm the cause of the fixed-line problem.
Should I factory-reset my router during an outage?
No. Check power and connections first, and follow your provider’s restart guidance. A factory reset can remove settings without repairing an outside connection.
What should I tell my internet provider when I call?
Give your service address and say which devices, websites, and connection types failed. Mention any equipment alert and whether mobile data or a wired device worked.
How do I check if internet is down in 2026 when neighbors are offline too?
Ask your provider to confirm whether an issue affects your address. Neighbors reporting the same symptom is useful context, not confirmation that the fault or repair status is identical.
One last thing
The most useful result in 2026 is sometimes a connection that still works. If a wired device loads pages while every WiFi device fails, you have narrowed the problem without waiting for an outage notice. Keep that result handy when you contact SumoFiber or another provider; it tells support where to start.
