Step 1: Run a Baseline Speed Test
Before fixing anything, measure what you have. Go to fast.com or speedtest.net and run a test from a device plugged in by ethernet cable directly to your router. This tells you whether the problem is your ISP connection or your WiFi.
| Test Result | Meaning | Fix |
|---|---|---|
| Wired slow, WiFi slow | ISP or modem issue | Call ISP, check modem |
| Wired fast, WiFi slow | WiFi problem | Router placement, channel, upgrade |
| Both fast, streaming buffers | Device or app issue | Clear cache, check device |
The Most Common WiFi Speed Killers
Poor Router Placement
A router in a corner, cabinet, or basement loses 50–70% of its range. Place it centrally, elevated, in the open. Concrete and brick walls kill signal dramatically.
Channel Congestion
If neighbors all use the same WiFi channel, you're all competing for airtime. Use WiFi Analyzer app to find the least congested channel in your area.
Outdated Router Firmware
Firmware updates often include performance improvements alongside security patches. Check for updates especially on routers over a year old.
Too Many Devices on 2.4 GHz
Smart devices default to 2.4 GHz. Move computers and phones to 5 GHz. Your smart TV doesn't need 5 GHz — your video calls do.
Quick Speed Fixes — Try These First
- Restart your router — unplug for 30 seconds. Clears cached connections and often restores speed instantly.
- Move router to center of home — centrally located, elevated off floor, not inside a cabinet or closet.
- Switch to 5 GHz band — for phones, laptops, and streaming devices within 30 feet of the router.
- Update router firmware — often includes performance improvements alongside security patches.
- Change WiFi channel — on 2.4 GHz use channels 1, 6, or 11 only. On 5 GHz any channel works.
When a Hardware Upgrade Is the Real Fix
If you've tried everything above and speed is still poor, consider that your router may simply be too old or too weak for your home. A router over 4–5 years old predates WiFi 6 and likely struggles with today's device counts. See our Router Buying Guide for the best current options.