Wi-Fi Slow? 10 Checks Before You Replace the Router

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Slow Wi-Fi does not always mean the router is failing. Separate the internet connection from the wireless link, change one thing at a time, and keep the results before buying new hardware.

1. Record a baseline
Run the same speed test on the same device in the same location. Note download, upload, latency, time, and whether other devices were active. One test is not a trend.

2. Compare Ethernet and Wi-Fi
If possible, connect the same computer directly to the router with Ethernet. If Ethernet is also slow, the problem may be the internet service, modem, router, cable, or upstream network rather than the Wi-Fi radio alone.

3. Test close to the access point
Repeat the test a few feet from the router with a clear path. A large improvement points toward distance, walls, placement, or interference.

4. Restart safely
Save active work, then restart the modem or gateway and router using the manufacturer or provider instructions. Wait for each device to reconnect fully before testing again. Avoid factory reset unless you have the configuration and know how to restore it.

5. Improve placement
Place the router in an open, central, elevated position when practical. Keep it away from dense obstructions, metal enclosures, and other electronics that can affect the wireless path.

6. Compare the available bands
Try the bands your router and device support. 2.4 GHz, 5 GHz, and 6 GHz have different range, capacity, and compatibility characteristics, so the best result depends on the device and location.

7. Review channel selection
Crowded channels can reduce performance. Automatic channel selection is a sensible starting point on supported routers. If you change a channel manually, record the old setting so you can reverse the change.

8. Update from official sources
Check the router manufacturer's or ISP's official app or support page for firmware, and the device maker or operating-system update service for Wi-Fi drivers and software. Do not install random driver packs or unofficial firmware.

9. Check traffic and connected devices
Pause large downloads, cloud backups, game updates, and high-bitrate streams, then retest. Review the router's connected-device list and change the Wi-Fi and administrator passwords if you see devices you do not recognize.

10. Collect evidence before replacing hardware
Test at several times of day and on more than one device. Give the ISP or router vendor the Ethernet result, Wi-Fi result, distance, band, firmware version, and timestamps. Replace hardware only after the evidence points to it.

Troubleshooting record

Code:

ISP plan:
Router or gateway model:
Firmware version:
Device and OS:
Test location:
Band:
Ethernet result:
Wi-Fi result:
Time tested:
Other active traffic:
Change made:
Result after change:

Useful references
- Microsoft Support: Fix Wi-Fi connection issues in Windows
- Apple Support: Recommended settings for Wi-Fi routers and access points
- FTC Consumer Advice: Secure your home Wi-Fi network

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