Why Is My Wi-Fi So Slow? 8 Fixes That Actually Work

Before blaming your broadband provider, it's worth knowing that slow Wi-Fi is often caused by factors within your home that are easily fixed. Here's how to work through the most common causes.

Step 1: Test your actual speed

Go to fast.com or speedtest.net on your phone (connected to Wi-Fi) and run a speed test. Then run the same test with your phone connected via a cable (if possible) or standing right next to the router. If the wired/close-up speed is much faster, the problem is Wi-Fi signal, not your broadband.

8 fixes for slow Wi-Fi

1. Restart your router

Routers need occasional restarts to clear memory and refresh connections. Turn it off at the wall, wait 30 seconds, then turn it back on. This fixes a surprising number of speed problems.

2. Move your router

Wi-Fi signals are weakened by walls (especially thick stone walls common in Devon farmhouses and cottages), floors, and large metal objects. The router should be in a central location, raised off the floor, away from the microwave and cordless phones, and as unobstructed as possible.

3. Change your Wi-Fi channel

If you live near other houses, their routers may be using the same Wi-Fi channel as yours, causing interference. Log into your router settings and try changing the channel. Channels 1, 6, and 11 are the least overlapping on 2.4GHz.

4. Use the 5GHz band instead of 2.4GHz

Most modern routers broadcast on both 2.4GHz (longer range, slower) and 5GHz (shorter range, much faster). If your device is close to the router, connect to the 5GHz network for significantly better speeds.

5. Check for devices hogging bandwidth

Someone streaming 4K video, a computer downloading a large update, or a security camera constantly uploading footage can consume most of your available bandwidth. Log into your router to see all connected devices and their data usage.

6. Update your router's firmware

Router manufacturers release firmware updates that fix bugs and improve performance. Log into your router's admin page (usually 192.168.0.1 or 192.168.1.1) and check for updates.

7. Check your laptop's Wi-Fi adapter

If only one device has slow Wi-Fi while others are fine, the problem is with that device's Wi-Fi adapter or driver. Updating the network driver or using a USB Wi-Fi adapter can often fix this.

8. Consider a Wi-Fi extender or mesh system

For larger homes or properties with thick walls, a single router often can't provide adequate coverage. A Wi-Fi extender (£20–£40) or mesh Wi-Fi system (£100–£200) can dramatically improve coverage throughout the property.