Cisco 8865 - Sign in with Mobile and Remote Access Through Expressway; Adjust the Phone Screen Brightness

Cisco IP Phone 8861 and 8865 Wireless LAN Deployment Guide
112
Common Settings
Some settings such as Wireless LAN and Bluetooth can be configured on an enterprise phone, common phone profile or
individual phone level.
Wireless LAN and Bluetooth are enabled by default for the Cisco IP Phone 8861 and 8865.
Wireless LAN is automatically disabled temporarily when Ethernet is connected to the Cisco IP Phone 8861 or 8865, but will
be automatically re-enabled once Ethernet is disconnected if Wireless LAN was enabled previously.
Override common settings can be enabled at either configuration level.