Start with what you can observe. You do not need to know whether the router, device or internet provider is responsible yet.
Check whether the problem affects one device or every device. That single comparison prevents a lot of unnecessary resets.
Use the 2-minute diagnosis →Your device is connected, but pages, downloads or video calls are taking too long.
The connection works, disappears and comes back—with or without warning.
Other devices are online, which points the investigation toward the device or its relationship with the router.
Rooms, floors and building materials are weakening the radio connection inside your home.