Wi-Fi intercoms use wireless networks for convenient audio and video communication via smartphones, while Ethernet intercoms rely on wired connections for reliable and stable communication. Both types offer features like remote door access and video surveillance, enhancing security and convenience. Wi-Fi intercoms are popular for residential use due to their flexibility, while Ethernet intercoms are preferred in commercial settings for their reliability. These intercoms are also 4G compatible, should you choose to modify yours to have 4G capabilities.