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Why Do Some Smart-Home Devices Require 2.4 GHz Wi-Fi?

Understand why plugs, bulbs, cameras, and other IoT devices may fail during setup on some networks.

Quick Answer

Many low-cost smart devices support only 2.4 GHz; setup may require the phone and device to communicate in a way compatible with the router's band configuration.

Step by Step

  1. Determine whether the problem affects one device or every device on the network.
  2. Many low-cost smart devices support only 2.4 GHz; setup may require the phone and device to communicate in a way compatible with the router's band configuration.
  3. Change one setting or component at a time and test again.
  4. Record existing router/network settings before changing passwords, DNS, addressing, or advanced configuration.

If That Doesn't Work

  • Router menus, indicator lights, and terminology vary by manufacturer and internet provider.
  • Avoid factory-resetting a modem/router unless you know how it is provisioned and have the information needed to restore the connection.