Wi-Fi
Wireless networking that lets devices connect to a local network without cables. Speed is affected by distance, interference, and the Wi-Fi standard.
What Wi-Fi means
Wi-Fi is a wireless networking technology that lets devices connect to a local network and the internet without physical cables. Your router broadcasts a Wi-Fi signal using radio waves. Devices within range, like phones, laptops, and smart home devices, connect by communicating with the router over those radio frequencies.
Wi-Fi operates on two main frequency bands: 2.4 GHz and 5 GHz. The 2.4 GHz band has longer range but lower maximum speed and is more susceptible to interference from microwaves, Bluetooth, and other devices. The 5 GHz band offers faster speeds and less interference but covers a shorter range and does not penetrate walls as well. Newer Wi-Fi 6E routers also use a 6 GHz band that is even faster with less congestion.
The Wi-Fi standard your router and devices support determines the maximum wireless speed possible. Wi-Fi 5 (802.11ac) is the most common standard in homes today. Wi-Fi 6 (802.11ax) is faster and handles many simultaneous devices more efficiently. Wi-Fi 6E adds the 6 GHz band for even less congestion.
Why Wi-Fi matters for your connection
For most households, Wi-Fi is where internet speed actually gets used. Even on a fast 500 Mbps fiber plan, the speed that reaches your phone or laptop depends on the quality of your router, how close you are to it, and what is physically between you and the router. A concrete wall, a microwave, or simply being too far away can cut your actual Wi-Fi speed to a fraction of your plan speed. See our router placement guide for tips on maximizing your Wi-Fi coverage.
Wi-Fi also adds latency compared to a wired Ethernet connection. For gaming or video calls where every millisecond matters, a wired connection is always preferable when practical. For general browsing and streaming, modern Wi-Fi is usually adequate.
Wi-Fi at a glance
| Wi-Fi Standard | Max Speed | Key Advantage |
|---|---|---|
| Wi-Fi 4 (802.11n) | 600 Mbps | 2.4 and 5 GHz dual-band |
| Wi-Fi 5 (802.11ac) | 3.5 Gbps | Faster 5 GHz, wider channels |
| Wi-Fi 6 (802.11ax) | 9.6 Gbps | Better multi-device efficiency |
| Wi-Fi 6E | 9.6 Gbps | 6 GHz band with less congestion |
| Wi-Fi 7 (802.11be) | 46 Gbps | Multi-link operation |
Common questions about Wi-Fi
Wi-Fi adds overhead, is affected by interference, and weakens over distance. Even a perfect Wi-Fi connection is slower than the theoretical maximum. Walls, distance, the number of active devices, and neighboring networks all reduce the speed your device actually receives.
Use 5 GHz when you are close to your router and need fast speeds. Use 2.4 GHz for devices far from the router or in rooms with thick walls, where the extra range and wall penetration outweigh the lower speed. Most modern routers handle this automatically with a feature called band steering.
Move your router to a central location in your home, elevated off the floor. Switch devices that need fast connections to Ethernet where possible. Update your router firmware. If your router is more than 5 years old, upgrading to a Wi-Fi 6 model can noticeably improve speeds in homes with many devices.
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