Patchy Wi-Fi is one of the most common broadband complaints, and it often has nothing to do with the broadband itself. The connection reaches your router at full speed, but the wireless signal fades as it passes through walls, floors and furniture. By the time it reaches a back bedroom or a loft conversion, there may be very little left.
There are three main ways to spread Wi-Fi further: a booster (also sold as an extender or repeater), a mesh system, or powerline adapters that carry the connection through your electrical wiring. Each suits a different kind of home, and picking the wrong one can leave you no better off.
Finding the cause first
Before buying anything, check whether the problem is the Wi-Fi or the line. Connect a laptop to the router with a cable and run a speed test, then repeat the test over Wi-Fi in the room where things are slow. If the wired result is close to your package speed but the Wi-Fi result falls away, the router’s signal is the weak link. If the wired test is slow too, no booster will help, and the problem lies with the line or the package. Our broadband speed test guide explains how to test properly.
A few free changes can make a real difference:
- Move the router out of cupboards, off the floor and away from the TV. A shelf in an open, central spot works far better.
- Keep it clear of mirrors, fish tanks and microwaves, which interfere with the signal.
- Restart the router occasionally and let it install updates.
- Use the 5GHz band for devices in the same room or next door, as it is faster over short distances. The 2.4GHz band travels further but carries less data.
Wi-Fi boosters, extenders and repeaters
These three names describe the same thing: a small unit that plugs into a wall socket, picks up your router’s signal and sends it on. They are cheap and quick to set up, and they work with almost any router.
The catch is where you put one. It needs to be close enough to the router to receive a strong signal, yet far enough away to reach the problem room. Halfway between the two is usually the right place. Put it in the dead spot itself and it can only pass on the weak signal it receives.
Basic single band extenders also lose speed, because they use the same radio to talk to the router and to your devices. Some create a second network name, so phones and laptops have to switch between the two as you move around. For one stubborn room in a small home, an extender can do the job. For a whole floor or a larger house, mesh is usually the better buy.
Mesh Wi-Fi
A mesh system uses two or more units placed around the home that work together as a single network. Your devices see one network name and move between units automatically, so a video call doesn’t drop as you walk upstairs.
Better mesh systems keep a separate radio link between the units, which stops the speed falling the way it does with a basic extender. Connecting the units to each other with an Ethernet cable is faster still, if your home allows it.
Mesh suits homes with several floors, long layouts, thick stone or brick walls, and extensions at the back. It costs more than an extender, but it covers the whole home rather than one corner.
Powerline adapters
Powerline adapters send your broadband through the electrical wiring. One adapter plugs in next to the router and connects to it with a cable, and the other goes in the room that needs a connection. Many include a Wi-Fi access point as well as a wired port.
They are handy for a garden office, a garage or a room at the far end of a long house, where Wi-Fi struggles to reach. Results depend on your wiring. Adapters work best on the same electrical circuit and plugged straight into the wall rather than into an extension lead, and older wiring can cut speeds noticeably.
A cable where it matters
For a games console, smart TV or home office desk near the router, an Ethernet cable is still the most reliable connection. It frees up Wi-Fi for phones and tablets, and gives the lowest ping for online gaming. Flat cables run neatly under carpets and along skirting boards.
Options compared
| Option | Works best for | Drawbacks |
|---|---|---|
| Moving the router | Any home with the router hidden away | Limited by where the line comes in |
| Booster or extender | One weak room in a small home | Lower speeds; may create a second network |
| Mesh Wi-Fi | Larger homes and several floors | Costs more than an extender |
| Powerline adapters | Garden offices and distant rooms | Depends on the electrical wiring |
| Ethernet cable | Consoles, TVs and desks near the router | Needs a cable run |
Mesh from your broadband provider
Most large providers offer a mesh add-on that works with their own router, often with a coverage promise if any room is left without a strong signal. The options include BT Complete Wi-Fi, Vodafone Super WiFi, Virgin Media WiFi Max, Sky WiFi Max and Community Fibre Premium WiFi. Each page explains how the service works and what it costs.
A provider’s mesh is the simplest choice if you plan to stay with that provider, because it is set up to work with your router and support can help if something goes wrong. A mesh system you buy yourself stays with you when you switch provider, so it can work out cheaper over several years.
Choosing by type of home
| Your home | Usually enough |
|---|---|
| Flat or small terrace | Router in a central spot, perhaps one extender |
| Three bedroom semi | A two unit mesh system |
| Large or detached home | A three unit mesh system, wired between units if possible |
| Home with thick walls or a long extension | Mesh, or powerline to the far end |
| Garden office or outbuilding | Powerline adapters or an outdoor access point |
Wi-Fi standards
Wi-Fi standards have names like Wi-Fi 5, Wi-Fi 6 and Wi-Fi 7. On a 500Mb or faster package, avoid anything older than Wi-Fi 6, or the booster becomes the slowest link in the chain. Your router matters too: our guides to the BT Smart Hub 3, Virgin Media Hubs, Vodafone routers, Sky routers and Community Fibre routers show which standard each one uses.
When faster broadband is the answer
If your wired speed test is slow, or every room struggles in the evening, the issue is the connection rather than the Wi-Fi. Check whether full fibre has reached your street with our broadband checker, and see our guide to what broadband speed you need before choosing a faster package from our best broadband picks.
FAQs
Do Wi-Fi boosters actually work?
Yes, if the problem is distance from the router and you place the booster where it still gets a strong signal. They can’t add speed that your broadband line doesn’t have.
Is mesh Wi-Fi better than an extender?
For most homes larger than a small flat, yes. Mesh gives one network across the whole home and loses less speed than a basic extender.
Will a Wi-Fi extender make my broadband faster?
No. It spreads the signal further but can’t raise the speed coming into your home. It can make the speed you already pay for reachable in more rooms.
Can I use my own mesh system with my provider’s router?
Yes. Most mesh systems connect to any router with a cable. Some providers let you switch the router to a simpler mode so the mesh takes over the Wi-Fi.
What is the best Wi-Fi booster for Sky broadband?
Sky’s own boosters and its Sky WiFi Max add-on are designed for Sky hubs and are the simplest option. Any standard extender or mesh system also works with a Sky router.
Do I need Wi-Fi 7?
Not yet for most homes. Wi-Fi 6 handles gigabit broadband well, and Wi-Fi 7 only helps if your phones, laptops and other devices support it too.