How to Choose a WiFi Extender?
Your WiFi range extender should support the same WiFi standards as your WiFi router. At the moment, the latest WiFi standard in use is IEEE 802.11ad, which provides data throughput rates of up to 6 Gbps. If you have an older router, it most likely supports only the IEEE 802.11n WiFi standard, also known as Wireless N.
This earlier standard can provide data throughput rates of up to 300 Mbps, making it considerably slower than the newest standard but still fast enough even for larger households.
You should also decide whether you need a dual-band WiFi extender or not. A dual-band WiFi extender can broadcast either on the 2.4 GHz or the 5 GHz band. A single-band WiFi extender can only broadcast on the 2.4 GHz band.
If you live in a densely populated area, the chances are there are many wireless routers in your vicinity that broadcast on the 2.4 GHz band, causing network congestions, which lead to lag spikes and slowdowns. Switching to the 5 GHz band is an easy way how you can avoid these issues and often even enjoy faster speeds and a more stable signal.