Why are there two Wi-Fi networks on some modems?

Some modem/routers generate two Wi-Fi networks – a 2.4GHz WiFi network and a 5GHz WiFi network.

MATE TP-Link Modem Wi Fi details - VR400 and VR1600v

Above Left: TP-Link Archer VR400 | Above Right: TP-Link Archer VR1600v

MATE Netcomm Modem Wi Fi details

Above: NetComm NF18ACV

We highly recommend connecting most of your devices to the 5GHz WiFi network as it generally delivers faster speeds and less interference.

💡 Tip: Some modems display both WiFi names (SSIDs) while others combine them under one name and switch automatically. If you want full control, you can split the networks in your modem’s settings.
2.4GHz WiFi advantages
  • Compatible with most devices, including older computers and smart home gear
  • Stronger signal over a longer range and through walls
2.4GHz WiFi disadvantages
  • Slower speeds compared to 5GHz
  • More interference from cordless phones, microwaves, and other 2.4GHz devices
  • Less ideal for apartment living where signal overlap is common
5GHz WiFi advantages
  • Much faster speeds for supported devices
  • Usually less interference than 2.4GHz
5GHz WiFi disadvantages
  • Shorter range than 2.4GHz, especially through walls or floors
  • Not all older devices can detect or connect to 5GHz