How to Boost Your Wi-Fi Signal at Home

Weak Wi-Fi tends to show up at the worst moment: the video call in the spare room, the film that buffers on the bedroom TV, the game that stutters upstairs. The reflex is to buy something. Before you do, work through the free steps below in order. Most homes find their fix somewhere in the first half of the list.

Start by finding the weak spots

Walk the house with your phone and note where the connection drops or slows. Run a speed test in each room from the same device, standing in the same place you normally sit. Write the results down. Guessing tends to blame the wrong room, and a simple list tells you whether the problem is one corner or the whole upstairs.

Free fixes, in the order worth trying

1. Move the router

Wi-Fi spreads outwards from the router, and every wall, cupboard and appliance in the way takes a little out of it. The best spot is:

• Central, rather than at one end of the house where the cable happens to come in.
• Raised, on a shelf rather than on the floor.
• In the open, not inside a TV cabinet, behind the sofa or in a drawer.
• Away from microwaves, cordless phone bases, fish tanks, mirrors and large metal objects.

If the cable socket is in an awkward place, a longer network cable from the socket to a better shelf often helps more than any gadget.

2. Restart and update

A router that has run for months without a break can slow down. Restart it, then check its app or admin page for a firmware update. If restarts stop helping, our guide on how to reset a router explains when a full reset is worth the effort.

3. Use the right band

Most modern routers broadcast on two bands, sometimes three:

Many routers combine the bands under one network name and choose for you. If a device keeps clinging to the slow band, splitting them into two names lets you pick by hand.

4. Change the channel

In apartments and townhouses, neighboring routers compete for the same channels. Most routers have an automatic channel setting; if yours is fixed, switch it to automatic or try a different channel and test again from your weak room.

5. Trim the traffic

Old phones, forgotten tablets and smart devices all keep a little connection open. Look at the device list in your router app and remove anything you no longer own. Pause large downloads and cloud backups during film night. Plug stationary devices such as a games console or desktop computer into the router with a cable where you can; every device that leaves the wireless network frees room for the rest.

When it is time for hardware

If the free fixes help but do not reach the far end of the house, the walls are simply winning. There are three main options:

• Wi-Fi extender. Picks up the existing signal and repeats it. Cheap and simple, but place it halfway between the router and the weak room, not in the weak room itself, or it repeats a poor signal.
• Mesh system. Several units that work as one network with one name. A good choice for larger or multi-floor homes, and the most hands-off once set up.
• Powerline adapters. Send the connection through your electrical wiring to another socket. Results depend on the wiring, so keep the receipt.

If your router is old enough that it was installed when the house had half the devices it has now, a newer router may be the honest answer. Your provider may offer a replacement, so ask before buying one.

A quick check for streaming rooms

TVs and streaming boxes are the devices most likely to show a weak connection, because video does not hide a stutter. If the TV is close enough, a network cable beats any wireless trick. If it is not, aim for 5 GHz and a clear line from router to screen. Tidying the cables around a wall-mounted set is a separate job; see hiding TV cables if the network cable you just added now trails across the floor.

The short list

1. Map the weak rooms with the same device.
2. Move the router to a central, raised, open spot.
3. Restart and update it.
4. Put each device on the band that suits it.
5. Let the router pick a quieter channel.
6. Remove old devices and cable up the ones that never move.
7. Only then consider an extender, mesh or powerline kit.

Work down the list one step at a time and test after each change. That way you will know what actually fixed it, which is useful the next time the bedroom TV starts to buffer.