Wi-Fi setup guide: improve coverage room by room

Run a speed test close to the router, then repeat it in the troublesome room on the same device. If you can, connect a computer directly to the gateway with Ethernet and test again. A good wired result and a poor distant Wi-Fi result point toward home coverage rather than the plan itself. Tests vary by device, time of day, and test server, so repeat them rather than treating one number as definitive.

If the wired connection is also poor, restart the modem or gateway using the provider's instructions and check for a reported outage. If performance remains consistently below expectations, contact the provider with the time and results of your tests.

Wi-Fi radio signals weaken over distance and through walls, floors, metal, and dense furniture. Put the router as centrally as your connection allows, elevated, out in the open, and away from large electronics and metal enclosures. A cabinet or the floor behind a television is convenient for cables but often poor for coverage.

Try moving it a few feet before buying anything. Recheck the weak room after each move. If your modem must stay by a wall outlet, a longer Ethernet cable between the modem and router may let you position the router better, depending on your equipment.

The 2.4 GHz band usually reaches farther and is useful for some older or low-bandwidth devices, but it has fewer channels and is more prone to congestion. The 5 GHz band offers more capacity and typically works better for nearby phones, laptops, and TVs. A 6 GHz band is available only when both your router and device support it; its reach through walls is limited.

Many modern routers choose a band automatically. If a particular device keeps choosing poorly, check the router app for band-steering or separate network options. Make one change at a time so you can tell what helped. Wired Ethernet is still a strong choice for stationary devices where a cable is practical.

Neighbors' networks and household devices can share or crowd the same radio space. Let the router select a channel automatically to start; if performance is inconsistent, the router's own app may show channel or interference information. Avoid changing several advanced settings at once, and note the old setting before trying a new one.

Install router firmware updates from the manufacturer or provider. Use a strong, unique Wi-Fi password and a current security mode supported by your devices, such as WPA2 or WPA3. Change the default router admin password if you control it. Security updates and sensible settings are more important than chasing the newest Wi-Fi version.

If careful placement cannot reach a distant room or another floor, consider a second access point connected by Ethernet. A wired connection between access points usually gives more predictable performance than asking a wireless node to repeat a weak signal. If wiring is not possible, a mesh system may help; place its second node where it still gets a good signal from the first, not at the very edge of the dead zone.

House size alone does not decide what to buy. Walls, layout, building materials, and the locations that matter to you are more useful clues. Before purchasing, check whether your existing provider gateway supports an additional access point, whether a mesh kit is compatible with your setup, and whether there is an ongoing rental fee.