The 30 centimeter rule is one of the methods used to determine router placement and improve the range of your home Wi-Fi network. This is one of the things you should take into consideration if you want to improve your signal.

Nowadays, it is normal to have multiple devices connected to a Wi-Fi network at home.  Some people have a cell phone and a smart TV, but they can also have laptops, smart speakers, vacuum cleaners, tablets, TV-connected devices, and more.  it is clear, All of these devices compete with each other to use your Wi-Fi network.
There are several ways to organize these devices to have a stable connection.  You can change the Wi-Fi channel to use the channel less saturated by neighbors on your network, and you can organize your devices into the 2.4GHz and 5GHz Wi-Fi bands So everyone can use what suits them..
But even so, sometimes that's simply not enough Because there are devices that can occupy more space on the network.  To avoid this, there is the 30cm rule, which states that connected devices must be at least 30cm away from the router.
In other words, it's not a good idea to leave one of your devices connected to a Wi-Fi network right next to the router.


Devices close to the router interfere with Wi-Fi distribution
As explained by Aman Bhatti, Director of Offerings at Sky Broadband the sunWhen you have a device connected to the router, it copies the signal strength.  By copying the signal and disabling it, a device connected to a Wi-Fi network near the router will cause an error The signal is distributed less uniformly and worseThis creates interference and affects the speed of other devices.
Here's what to keep in mind 30cm is the minimum distanceIt is recommended to keep the device far away to avoid further interference.  There are even devices like smart TVs where a distance of between 1.5 and 1.8 meters is recommended.
In addition to this, remember that there are many other ways to amplify your Wi-Fi signal, ranging from where to place your router so the signal is better distributed throughout your home, to changing the Wi-Fi channel, to choosing between the 2.4GHz and 5G Wi-Fi bands. Hz or antenna position.  If it is not enough, Wi-Fi repeaters can be used Or other devices to amplify it.

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