Buffering videos, dropped video calls and web pages that take forever to load — slow Wi-Fi affects work, school and entertainment. The cause is often simple to fix. This guide explains how to diagnose slow Wi-Fi and walks you through 13 easy solutions, starting with the free ones.

First, Find Out Whether It's Your Wi-Fi or Your Internet

Your "internet" has two parts: the connection from your provider into your home, and the Wi-Fi network that carries it around your home.

  1. Run a speed test (for example, speedtest.net or fast.com) next to your router.
  2. Run it again in the room where the problem happens.
  3. If possible, test with a cable plugged directly into the router.
  • If speed is slow even next to the router or on cable, the problem is likely your internet plan or provider.
  • If speed is fine near the router but poor elsewhere, the problem is your Wi-Fi coverage.

Quick Fixes for Slow Wi-Fi

1. Restart your router and modem

Turn them off, wait 30 seconds, then turn them back on. This clears memory and often resolves slowdowns. If you have to do this frequently, your router may be overheating or out of date.

2. Move your router to a better spot

Wi-Fi signals weaken through walls, floors, metal and water (including fish tanks). Place the router:

  • in a central location,
  • up high on a shelf rather than on the floor,
  • away from microwaves, cordless phones and thick walls,
  • out of cupboards and cabinets.

3. Check how many devices are connected

Every phone, TV, laptop and smart device shares your bandwidth. Log in to your router's app or admin page to see connected devices. Disconnect ones you don't recognise and change your Wi-Fi password if strangers are using it.

4. Pause heavy downloads and uploads

Large game downloads, cloud backups, 4K streaming and video uploads can use most of your bandwidth. Schedule them for overnight.

Router Settings That Improve Speed

5. Use the 5 GHz band (or 6 GHz)

Most routers broadcast two or three bands:

  • 2.4 GHz: longer range but slower and more crowded.
  • 5 GHz: faster, less interference, shorter range.
  • 6 GHz (Wi-Fi 6E/7): fastest and least crowded, shortest range.

Connect laptops, TVs and phones to 5 GHz where the signal is good.

6. Change the Wi-Fi channel

In apartments, neighbouring networks can overlap. Many routers choose channels automatically; if not, try channels 1, 6 or 11 on 2.4 GHz. A Wi-Fi analyser app can show the least crowded channel.

7. Update your router firmware

Router updates fix bugs, improve speed and close security holes. Check your router app or admin page for a firmware update.

8. Secure your network

Use WPA2 or WPA3 security with a strong password. Open or weakly protected networks invite neighbours and attackers to use your bandwidth. Our cybersecurity guides explain more.

Device Fixes

9. Update your devices

Old network drivers and operating systems can limit speed. On a Windows PC, update your Wi-Fi driver and see our guide to speeding up Windows 11.

10. Forget and reconnect to the network

On your phone or laptop, "forget" the Wi-Fi network and join it again. This clears corrupted connection settings.

Upgrades for Stubborn Slow Wi-Fi

11. Upgrade an old router

If your router is more than five or six years old, it may not support modern standards like Wi-Fi 6. A newer router can handle more devices and deliver faster speeds.

12. Use a mesh Wi-Fi system

Mesh systems use two or three units placed around your home to create one strong network. They are the best solution for large homes, multi-storey houses and buildings with thick walls.

13. Use wired connections where possible

For desktop PCs, smart TVs and games consoles that don't move, an Ethernet cable gives the fastest, most stable connection. Powerline adapters can carry the connection through your home's electrical wiring if running a cable is impractical.

When to Call Your Internet Provider

Contact your provider if:

  • speeds are much lower than your plan even on a cable,
  • your connection drops at the same times every day,
  • the modem's lights show errors, or
  • neighbours using the same provider report similar issues.

Ask them to check your line, replace an old modem, or recommend a faster plan if your household's needs have grown.

Frequently Asked Questions

Why is my Wi-Fi slow at night?

Evenings are peak usage times, both in your home and across your provider's network. Scheduling downloads for off-peak hours and using 5 GHz can help.

Do Wi-Fi extenders work?

Basic extenders can help small dead spots but often halve the speed. Mesh systems generally work much better.

How often should I restart my router?

Once a month is plenty for a healthy router. Needing daily restarts suggests a hardware or firmware problem.

Is 5 GHz always better?

It's faster at short to medium range, but 2.4 GHz travels further through walls. Use whichever gives the stronger, more stable signal in each room.

Final Thoughts

Most slow Wi-Fi problems come down to router placement, crowded channels, old equipment or too many devices. Start with the free fixes, then consider a new router or mesh system if needed. For more step-by-step help, explore our Tech section.