If your electronic devices or your neighbor's network slow down your home network and internet connection, change the wireless channel on your router to communicate on a different frequency to avoid interference. This information applies to all routers that use 2.4 GHz or 5 GHz Wi-Fi.
Yes, 5Ghz WiFi can go through walls, but it is more likely to be weakened or blocked by obstacles like walls, floors, and ceilings.
Some wireless networking equipment such as routers, laptops, or tablets may only support the 2.4 GHz band, which provides the broadest coverage. However, most devices now support both 2.4 GHz and 5 GHz frequencies (dual-band WiFi), and they can dynamically switch between the two bands to optimize wireless connectivity.
5 GHz: Many wireless devices do not rely on this wireless frequency, and signal interference is less likely to occur. A 5 GHz Wi-Fi network has narrower signal coverage than a 2.4 GHz Wi-Fi network, but its signal strength may weaken due to nearby obstacles.
The 2.4 GHz band has better range than its 5GHz counterpart and can penetrate through walls/ceilings or any sort of obstacles better than the 5Ghz band. Since Smart home devices such as smart bulbs and smart cameras are usually mounted outdoors or on walls and ceilings, it makes sense to go with the 2.4Ghz band.
In some cases, turning off 5GHz may improve WiFi because it can reduce interference and improve the stability of the connection. However, in other cases, turning off 5GHz may actually worsen WiFi because it can limit the available bandwidth and reduce the overall performance of the connection.
Using a 5Ghz frequency, you will get about 50 feet or about 15 meters of reach. The reach of your signal will be impacted by the manufacturer of the equipment that you are using, the location your router is installed, and the obstructions that might block the signal in your home or business.
A common cause of reduced Wi-Fi performance is dense walls and furniture in between routers and wireless devices. In addition to dense walls and objects, conductive materials can block Wi-Fi signals the most, causing Wi-Fi not to work in some buildings.
Range or Speed
speed. If you want better range, use 2.4 GHz. If you need higher performance or speed, use the 5GHz band. The 5GHz band, which is the newer of the two, has the potential to cut through network clutter and interference to maximize network performance.
Using the channels 2-5 and 7-10 causes overlapping signals with other channels. When everyone sticks to 1, 6 and 11, interference will be handled better than if it were to come from adjacent channels, as they can create interference for a lot of people, as we see in the example below.
On the 5 GHz band, set the channel width to 40 MHz and see if that improves reliability. Keep in mind that 80 MHz and 160 MHz channel widths may carry the promise of extra speed, but will also interfere with, and receive interference from, many more sources than 40 MHz.
In addition, Wifi 5 MU-MIMO technology comfortably allows just four devices to connect simultaneously. More devices mean congestion and bandwidth sharing leading to lesser speed for each device.
Changing WiFi's frequency to 5GHz
If your router supports 5GHz WiFi frequency, the obvious solution for all BT/WiFi interference issues would be changing it to work in 5GHz mode, because as we already said, Bluetooth is using 2.4GHz so they wouldn't interrupt each other anymore at all in that case.
All smart products, despite the brand, only work with a 2.4 GHz signal. If your router sends out a 5 GHz signal, you probably get issues with connecting, as your smart device is only able to pick up the 2.4 GHz signal.
Change Your Router Channel. Usually, the router's default settings meet local requirements, and the channel setting is in auto mode. Therefore, when the router channel number is changed, sometimes, you face issues with a 5G Wi-Fi connection. Consequently, we suggest you adjust the router channel number manually.
Smart devices are set to work on the 2.4 GHz frequency and will not connect and work on 5GHz. Even though 2.4 GHz carries less information, it has better range than the 5 GHz frequency band.
Your computer might fail to detect the 5GHz connection if there's something wrong with your router. Restarting the router is one of the best ways you can try to get rid of most of the network issues, including this one.
Your 5G router needs as few obstacles between it and a mast as possible, so it should be placed near a window, ideally on a windowsill, with no curtains or blinds in the way. It should also be away from electronic equipment like microwaves and baby monitors, which can interfere with the signal.
The 5 GHz Wi-Fi band broadcasts Wi-Fi on higher frequencies than 2.4 GHz Wi-Fi band, and these higher frequencies don't travel through walls and solid objects as well as the lower frequencies of 2.4 GHz Wi-Fi. This results in less Wi-Fi range than 2.4 GHz Wi-Fi.
Once it's disabled, you're all set—your old 2.4GHz appliances should hopefully work a little better, and your Wi-Fi devices will continue reaping the speed benefits of the fast 5GHz band.