A simultaneous client wireless device includes wireless modules configured to perform communication functions of a PHY (physical) layer for wireless radios operable in different bands. The simultaneous client wireless device also includes a communication module configured as an intermediate layer between the PHY layer of the wireless modules and a network layer. The communication module is configured to use an application programming interface to retrieve information from the PHY layer and write information to the PHY layer of the wireless modules, perform communication functions of upper MAC (media access control) and lower MAC layers for the wireless bands, and manage simultaneous communications over the wireless bands. The communications over the wireless bands can use a local area network protocol.