What affects Wi-Fi performance?

There are many factors that can affect WiFi performance. Here are some things to consider around your home.

Modem location

Positioning your modem is really important and determining the right location depends on how you like to use the internet. Generally speaking, it’s best to place your modem in a central room where you will be using Wi-Fi the most. Place it up high, in the open and standing upright in its designed position. A modem knocked over on the floor behind a desk or tucked away in a cupboard will be less effective.

Distance to your devices

Wi-Fi has a limited range which means the further you move away from your modem, the weaker the signal will become. This is why some people might experience weaker Wi-Fi performance in bedrooms for example.


Obstacles between your device and the modem can also reduce the quality of the signal. Appliances like microwave ovens, Bluetooth speakers and baby monitors emit radio “noise” that can inhibit wireless communication. Wooden and concrete walls, as well as large glass or metal objects e.g. hot water cylinders or aquariums, can also affect Wi-Fi performance.

Number of devices

The more devices that are connected to your network, the less wireless bandwidth is available to each device. This can slow down your Wi-Fi so you might want to consider disconnecting devices you’re not using. Connecting more permanent devices like a TV or computer via an ethernet cable, will also free up Wi-Fi bandwidth for mobile devices (and will usually achieve faster speeds compared to a Wi-Fi connection).

Types of devices

The devices you are trying to connect to the internet may also limit Wi-Fi speed and quality, particularly if they are older devices. Consider the types of devices you are using and whether they might need to be updated to newer Wi-Fi technology.

Other Wi-Fi Networks

Neighbouring Wi-Fi is a common cause of signal interference. If you live in an apartment building, multiple Wi-Fi access points in close proximity can make it difficult to get a strong and consistent wireless signal. To check the interference from neighbouring networks, download a Wi-Fi analyser from Google Play or the Apple App Store and review the channel congestion. If slow Wi-Fi speed is an on-going issue, you may need to set your modem to a less congested channel. You’ll need to call us to change your Wi-Fi channel.

There are also Wi-Fi mesh products available that can help improve your Wi-Fi experience by automatically and dynamically changing channels to optimise the Wi-Fi on each device.