Why is my Wi-Fi slow?
Slow Wi-Fi is commonly caused by distance from the router, walls and floors, interference, congestion, poor router placement, ageing equipment or one device having its own problem.
Test another device close to the router and, where possible, compare a wired connection before buying extra equipment.
First, is it Wi-Fi or the internet connection?
Wi-Fi is the wireless link to the router; broadband is the router's connection to the internet. Test more than one device near the router to separate the two.
Quick checks worth trying
- restart the affected device
- restart the router once and allow it to reconnect
- test close to the router
- compare another phone, tablet or computer
- check for large downloads, backups or streaming
- test with Ethernet where practical
Avoid repeatedly factory-resetting the router. This can remove broadband, telephone, mesh or security settings.
Weak signal and poor router position
Walls, floors, metal, mirrors and distance weaken Wi-Fi. A central, open and elevated position often helps.
Interference and congestion
Nearby networks, wireless cameras, smart devices and household equipment can compete for radio space, especially in built-up areas.
2.4 GHz, 5 GHz and 6 GHz
Lower frequencies generally reach farther but are often slower and more congested. Higher frequencies provide better speed at shorter range but lose strength more quickly through walls.
What if only one device is slow?
The cause may be its Wi-Fi adapter, driver, browser, VPN, security software or background activity.
Would mesh Wi-Fi help?
Mesh can improve coverage in larger or awkward homes, but poorly positioned wireless nodes can repeat a weak signal. Wired links between access points are usually more consistent where practical.
Could it be the broadband provider?
Yes. If a wired test at the router is also slow, the issue may involve the line, provider, router or service package.
Could someone else be using my Wi-Fi?
Unknown devices or a weak password can add congestion and create a security concern, but device names are not always obvious, especially with smart-home equipment.
Frequently asked questions
Why is Wi-Fi slow upstairs?
Floors, distance and router position weaken the signal. A properly placed mesh system or wired access point may be needed.
Will a Wi-Fi extender fix it?
It may improve coverage, but a basic extender can reduce speed and reliability if placed where the original signal is already weak.