An upper bucket has a closed top, an open bottom and a side wall. Feature indications can be provided to inform a user of the mobile device that an incoming call or outgoing call is eligible for an account calling feature based on whether the conditions for the calling feature to apply are currently met. A stationary plate or disc valve has a disc valve fluid channel in a disc valve radial surface, which is in contact with the rotating bushing radial surface resulting in a periodic alignment between the disc valve fluid channel and each of the bushing channels.