Alexa and Google Home are convenient, but they can slow down your Wi-Fi. Experts explain why this happens – and how simple tricks can ensure more speed.
Why Alexa & Google Home can interfere with WiFi
Smart speakers like Amazon Alexa or Google Home have long been part of everyday life. But what many people don’t know is that if you are too close to the router, your internet speed can suffer. As Chip reports, both routers and Bluetooth devices work on similar radio frequencies – and therefore interfere with each other. This can lead to noticeably slower speeds or short connection interruptions.
Bandwidth guzzlers in everyday life
Even though Alexa appears to be doing nothing when idle, she is constantly connected to Wi-Fi. This creates a continuous stream of data, which, according to Allconnect, adds up to around 7 megabytes per device per day. It doesn’t sound like much, but it can be noticeable in a household with several smart speakers. If Alexa is actively used – for example for music streaming, weather queries or smart home control – consumption increases significantly and can amount to up to 1 gigabyte per month.
The problem worsens when, in addition to Alexa and Google Home, other smart devices such as lamps, cameras or TVs are in use at the same time. Because every device takes up a piece of the “data cake”. The more devices transmit in parallel, the smaller the piece for each individual becomes – the connection becomes slower. As Vesternet points out, this can cause a noticeable drop in the overall performance of the WLAN, especially if many devices are active at the same time.
Other sources of interference in the household
It’s not just Alexa or Google Home that can slow down Wi-Fi. Even everyday things like microwaves, baby monitors or even mirrors and large aquariums affect the signal quality. As Chip explains, older devices or those that operate on radio frequencies are particularly susceptible to interference – they can further weaken the WLAN signal and make the connection unstable.
Router location and frequency selection are crucial
Stable Internet access depends not only on bandwidth, but also on the correct location of the router. As Chip emphasizes, it should not be placed directly next to smart speakers or other Bluetooth devices, otherwise the radio signals can interfere with each other. It is also worth using the 5 GHz band, which is less susceptible to external influences. Modern routers also automatically select the channel to avoid overlaps with neighboring WLANs and thus optimize the connection.
Practical solutions for a stable WLAN
A first step towards greater stability is to keep an eye on the number of devices connected at the same time. As Vesternet explains, it helps to disconnect unnecessary connections or actively monitor bandwidth. For households with many smart devices, it can also make sense to use alternatives such as Zigbee or Z-Wave, which relieve the strain on the WLAN and were developed specifically for smart home applications. If the available speed is not sufficient despite these measures – for example if several video or streaming services are used in parallel – Allconnect recommends choosing the Internet tariff with a higher bandwidth.
Editorial team finanzen.net
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