A power control device (18), for use with a WPAN host device (10), and a method (30) for supporting seamless mobility in transferring content between a WPAN-enabled device and the host device, such as between a Bluetooth-enabled information source and a Bluetooth-enabled host device. The host device includes a WPAN module (14), an on/off control module (16) and the power control device or module (18). The power control module (18) includes a power source (24) for powering a controller (22) that instructs the on/off control module to turn on the host device if the host device is turned off and if a WPAN information source has a WPAN master/slave relationship with the host device. The controller also can instruct the on/off control module to turn off the host device if the WPAN information source no longer has a WPAN master/slave relationship with the host device.