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Troubleshooting

Fix Slow WiFi Speed

Diagnose and fix the most common causes of sluggish WiFi — from channel congestion to router placement.

Updated 2026

  1. 1

    Run a speed test at the router

    Connect a device by Ethernet and test speed at fast.com or speedtest.net. If it's slow there too, the problem is your ISP, not WiFi.

  2. 2

    Move the router to a central location

    Place the router in the open, elevated, away from walls and appliances. Avoid corners and cabinets.

  3. 3

    Change the WiFi channel

    Log in to your router and switch to a less congested channel. Use a WiFi analyser app to see which channels neighbours use.

  4. 4

    Switch to the 5 GHz band

    5 GHz is faster and less congested than 2.4 GHz for nearby devices. Enable it in wireless settings and connect your devices to it.

  5. 5

    Update the router firmware

    Outdated firmware can cause performance issues. Check the admin panel for a firmware update.

  6. 6

    Reduce interference

    Keep the router away from microwaves, cordless phones and baby monitors that use the 2.4 GHz frequency.

  7. 7

    Check for bandwidth hogs

    Look at the connected-devices list in your router to spot devices using excessive bandwidth.

Frequently Asked Questions

Why is my WiFi fast on my phone but slow on my laptop?
The laptop may be connecting to the slower 2.4 GHz band. Check which band it's on and switch it to 5 GHz.
Will a WiFi extender fix slow speed?
An extender can improve coverage but rarely improves speed — in fact it can halve throughput. A mesh system is a better solution for large homes.