A method and device for selectively limiting a non-vehicle user input source of a non-OEM handheld mobile device are disclosed. Upon sensing a docking of the non-OEM handheld mobile device with a vehicle network, and determines a vehicle state level based on vehicle sensor data. When the vehicle state level indicates an increase in the likelihood of operator distraction, a touch block command for the non-OEM handheld mobile device is retrieved and transmitted via the vehicle network. The touch block command operates to block a non-vehicle user input source of the non-OEM handheld mobile device.