Quick answer
A flashing Wi-Fi light most often means data is moving between your devices and the router, which is normal. It can also mean WPS pairing is active, or, if it blinks slowly for a long time and the internet is down, that the router is having a startup or connection problem. Light behavior differs by brand, so confirm in your manual.
Normal flickering
Quick, irregular flashing on a Wi-Fi light generally just reflects wireless traffic from phones, laptops, TVs, and smart devices. It may flicker more when someone streams or downloads, and less when things are idle. If your Wi-Fi works, this is generally nothing to fix.
WPS blinking
Some routers have a separate WPS light, and on some models the Wi-Fi light changes when WPS is active. WPS (Wi-Fi Protected Setup) lets a device join without typing the password, usually after pressing a button on the router. A blinking WPS light, sometimes blue or purple, generally means a pairing attempt is in progress and it should stop after a short time. If it blinks constantly, it may be worth checking the router’s settings. Many people turn WPS off when not using it, as a precaution.
Slow or steady blinking
Slow blinking right after power-on is typically startup. If it continues for a long time, especially with no internet, the router may be struggling to connect or may have a firmware or hardware issue. As a rough guide, if a slow blink continues well beyond several minutes after startup, start troubleshooting.
Wi-Fi light blinking but no internet
The Wi-Fi light only describes the wireless side. A router can broadcast Wi-Fi even when its link to your provider is down. If devices connect but pages will not load, look at the Internet or WAN light instead, and see why the internet light on your router keeps blinking. As for what color a blinking router light should be, it depends on the model; green or white is typically normal, while amber or red usually flags a problem.
What to try
- Wait a few minutes after powering on.
- Power cycle. Unplug the modem and router for about a minute. Plug in the modem first, wait for its lights to settle, then the router.
- Check cables, especially the one from the modem to the router’s Internet port.
- Check WPS. If a WPS light keeps blinking and you are not pairing anything, look in the router’s admin settings (see where to find your router password and login if you need to log in).
- Check for outages with your provider.
When to get help
If the light keeps blinking after a restart, or the Wi-Fi network disappears, consult your router’s manual or your provider’s support. For a wider overview of indicators, see what the lights on your router mean.