What do the lights on my modem and router actually tell me?

Start with the exact model, not a general list of what “green,” “orange,” or “blinking” supposedly means. Look for the model name or number printed on the device or its label, then find that model’s official documentation. The same color or pattern can mean different things on different devices. Google, for example, lists different indicator meanings for its Nest Wifi Pro, Nest Wifi, and Google Wifi models [S1].

Record both the color and the pattern: steady, blinking, or changing, if that is what you see. Also note which labeled light it is, such as the one marked Internet or Wi-Fi. Those details make it possible to compare what you observe with the correct guide.

Check the label on the device, its packaging, or the device information shown in its companion app, if you use one. Write down the manufacturer and the full model name or number; similar-looking devices may have different guides. If the label is hard to read, a clear photo for your own reference may help you inspect it without moving or disconnecting anything.

For a modem and a separate router, identify each device independently. Don’t assume that a light on one explains a light on the other. If you cannot identify a model, note that in your worksheet and ask the internet provider or device maker how to find the model-specific guide.

Compare the closest details without forcing a match: the label beside the light, its color, whether it stays on or blinks, and whether its behavior changes. Read the guide’s notes for the exact model. Some listed yellow patterns on Google Wifi devices, for example, are associated with network errors or lost WAN connectivity, while other patterns indicate setup or reset states [S1]. That is a reason to check the exact pattern—not to treat every yellow light as the same warning.

If the guide does not clearly match what you see, record the observation as “not matched to guide.” Avoid treating a color alone as proof of a particular fault or taking action based on a guess. The source documents particular Google devices and does not establish the meanings for other brands or models [S1].

Use a short log that separates what you observed from what the guide says. Here is a copyable worksheet; the details below are placeholders, not a diagnosis:

Network status worksheet

1. Date and time: [date, time, and time zone if useful]
2. Device: [modem/router, manufacturer, exact model]
3. Light label: [label printed beside the indicator]
4. Observation: [color, steady/blinking, and any change noticed]
5. Guide checked: [official guide title or model-specific page]
6. Guide match: [matching description / no clear match]
7. Other context: [what you noticed at the same time, such as whether another device’s light changed]
8. Question to ask: [what you want the provider or manufacturer to clarify]

Example, using hypothetical details: “Tuesday, 8:15 p.m.; router, [Brand] [Model]; light labeled [Internet]; amber, blinking; guide checked, [official guide for exact model]; no clear match; question: ‘Which documented pattern matches this observation?’” Keep the example’s model and interpretation as placeholders until you verify your own device’s guide.

If the pattern is unclear or the problem continues, share your model number, the exact light label, and a brief time-stamped log with your internet provider or the device maker. That gives them observations to interpret against the correct documentation. Ask them to confirm which guide applies and what the documented pattern means for your model.

This worksheet helps describe status changes; it cannot establish the cause of an internet problem or verify that a device is working properly. The supplied source only documents indicator meanings for the named Google Wifi models, not all modems and routers [S1].