The Boost feature is a free service which enables you to choose which device gets the greatest share of the Wi-Fi signal for a period of 2, 4 or 12 hours at a time. This is useful if, for example, you need more signal to join a video conference call while someone else is connected to the Wi-Fi. Only one device can use Boost at a time.
When the Boost feature is activated, you’ll see the time remaining displayed on your device above the Boost symbol. You can extend this period by 2, 4 or 12 hours if you need to.