Slow Wi-Fi is one of the most common tech frustrations, and the good news is that most causes can be fixed in minutes without buying anything. Work through these nine fixes in order; each one is a little more involved than the last.
Key takeaways
- Measure your speed near the router and in slow rooms first.
- Restarting and relocating the router fixes many problems for free.
- Use the 5GHz or 6GHz bands for nearby devices that need speed.
- Wired connections are best for desktops, consoles and TVs.
- Mesh systems solve dead zones in larger homes.
Before you start: measure your speed
Run a speed test on a device near the router and again in the room where Wi-Fi feels slow. If speeds are low even next to the router, the issue is likely your internet plan or provider. If they drop only in certain rooms, the fixes below will help most.
1. Restart your router and modem
Unplug both devices, wait 30 seconds, then plug in the modem first and the router second. A restart clears memory and often resolves sudden slowdowns.
2. Move the router to a better spot
Place the router in a central, elevated and open position. Avoid cupboards, thick walls, fish tanks and large metal objects, all of which weaken the signal.
3. Update the router firmware
Open your router’s app or admin page and install any available updates. Firmware updates improve performance and fix security problems.
4. Use the right band
Most routers broadcast on 2.4GHz and 5GHz, and newer models add 6GHz. The 2.4GHz band reaches further but is slower and more crowded; 5GHz and 6GHz are faster at shorter range. Connect laptops and TVs near the router to the faster bands.
5. Change the Wi-Fi channel
If neighbours’ networks overlap with yours, switching channels can help. Many routers have an automatic channel option; on 2.4GHz, channels 1, 6 and 11 usually cause the least interference.
6. Find bandwidth hogs
Cloud backups, game downloads and 4K streams can consume most of your connection. Check the router app for heavy users and schedule large downloads overnight.
7. Secure your network
Use WPA3 or WPA2 encryption with a strong password so neighbours are not quietly sharing your bandwidth. Our cybersecurity guides explain how to check this.
8. Use a wired connection where it matters
For desktop computers, games consoles and smart TVs that rarely move, an Ethernet cable delivers the fastest and most stable connection and frees up Wi-Fi for phones and laptops.
9. Upgrade to a mesh system or newer router
Large or multi-storey homes often need more than one access point. A mesh system spreads several units around the house to remove dead zones. If your router is more than five years old, a Wi-Fi 6E or Wi-Fi 7 model can also make a big difference.
Troubleshooting order: restart, relocate, update, then reconfigure. Only spend money once the free fixes are exhausted.
Common Wi-Fi myths
- “More antennas always mean faster Wi-Fi.” Placement and interference matter far more than the number of antennas.
- “Wi-Fi boosters solve everything.” Basic range extenders can halve speeds; mesh systems are usually a better choice.
- “My internet plan is the problem.” Often the plan is fine and the bottleneck is an old router or poor placement.
Understanding Wi-Fi generations
Router boxes use names such as Wi-Fi 5, Wi-Fi 6, Wi-Fi 6E and Wi-Fi 7. Newer generations handle many devices more efficiently and can use additional, less crowded frequency bands. To benefit, both the router and your devices need to support the newer standard, which is worth checking when you follow our laptop buying guide.
Keep your network safe as well as fast
Change the router’s default admin password, keep firmware updated and use WPA3 encryption when available. Guest networks are useful for visitors and smart home gadgets, keeping them separate from the computers that hold your personal files. Our guide to two-factor authentication explains how to protect the router app account as well.
Still slow?
If speeds remain poor even with a cable plugged into the router, contact your internet provider and share your speed test results. For more step-by-step fixes, explore the How-To Guides hub on Technicalinterest.Com, or compare routers in our Gadgets section.
Quick checklist
Before you call your provider, run through this list: restart the router, move it somewhere central and high, update its firmware, connect nearby devices to the faster band, change crowded channels, pause large downloads and test again with a cable. If speeds are still poor with a wired connection, the problem is almost certainly the line or the plan rather than your Wi-Fi.
Frequently asked questions
Why is my Wi-Fi slow only at night?
Evening congestion is common, both on your provider’s network and from neighbours using the same Wi-Fi channels. Switching bands or channels often helps.
Is a mesh Wi-Fi system worth it?
For larger or multi-storey homes with dead zones, yes. In a small flat, a well-placed modern router is usually enough.
How often should I restart my router?
Restarting once a month, or whenever speeds drop suddenly, is enough for most home networks.
