What’s the difference between 2.4 GHz and 5 GHz WiFi?

Your wireless router uses radio frequencies to transmit internet to your WiFi-connected devices like smartphones, laptops, tablets and more. The difference between 2.4 GHz and 5 GHz really comes down to two factors: bandwidth (speed) and range. Remember that the speeds you get over WiFi depend on the internet service speed you are paying for.

2.4 GHz overview
  • Pros: Larger coverage area; better at penetrating solid objects
  • Cons: Lower data rate; more prone to interference; usually more devices using this frequency
  • Max connection speed: ~150 Mbps
  • Max signal range from router: ~410 ft
5 GHz overview
  • Pros: Higher data rate; less prone to interference; usually fewer devices using this frequency
  • Cons: Smaller coverage area; worse at penetrating solid objects
  • Max connection speed: ~1 Gbps
  • Max signal range from router: ~410 ft amplified

Which frequency should you choose?

A 2.4 GHz connection travels farther at lower speeds, while 5 GHz frequencies provide faster speeds at shorter range. Which frequency you choose will depend on where and how you use your WiFi connection most.

A lot of electronic devices and appliances use the 2.4 GHz frequency, including microwaves, baby monitors, and garage door openers. If you have many of these in your home, or if you live in apartments or condos surrounded by other people, that 2.4 GHz band is likely to be congested, which can damage speed and signal quality.

Use 5 GHz for a device closer to the router

If your device doesn’t need to be moved around much and can be located near your router, 5 GHz is your best choice to reduce congestion and take advantage of higher speeds. Similarly, if you're doing a lot of high-bandwidth activities online, such as gaming or videoconferencing, it's best to use this frequency and move as close as possible to the router. (Better yet, plug directly into the modem with an Ethernet cable if possible, as a wired connection is always more stable and faster than wireless.)

Use 2.4 GHz for a device farther from the router

On the other hand, on a device that moves around a lot throughout the day (like your smartphone), especially if you have a large home, the 2.4 GHz frequency is your best bet. This wavelength has a longer range and can penetrate solid objects more easily than the 5 GHz band, making it ideal for devices that are taken from room to room or are more distant from the router.  

How do you change frequency settings?

Whether you choose 2.4 GHz or 5 GHz, you need to make sure your wireless is enabled on your modem/router and  set to use the same frequency. Check your specific model of router for  compatibility and frequency capabilities.

With a dual-band router, you can set it to transmit at both frequencies concurrently. In this case, you typically have two networks (SSIDs) that appear in your network list, with identical names except for a "5G" or "2.4G" at the end. You can then choose to connect each individual device to either network.

On most newer modems, there is also a way to find the best WiFi channel for your environment and then change the channel as needed in the modem's wireless settings

Open the sections below for more detailed information about WiFi speed and range.
Comparing speed
Comparing range/coverage area
Was this article helpful?

Introducing WiFi 6

Intel WiFi 6 Gig+ is the next generation in-home WiFi technology, designed for the ever-increasing demand of connected homes and gigabit connections. Compared to WiFi 5, it delivers:

  • Up to 3x the connectivity speed 
  • Up to 4x the data capacity 
  • Up to 75% less lag time (latency) for gaming and video applications

WiFi 6 also includes embedded cybersecurity, managed network services and parental controls.
This feature is available with the Greenwave C4000 modem/router.

Top Tools
Internet Speed Test
Service Troubleshooter
Service Appointment Manager
Where's My Technician?
Modem Compatibility
Manage My Services
Find Product Availability
CenturyLink Product Support
Search Support