An embodiment of a method for call management, performed by a processing unit of a mobile device, is introduced. A telecommunications network is notified to block MT (mobile-terminated) calls through a base station after the mobile device has successfully associated with a WLAN (wireless local area network) AP (access point) deployed in a region in which noises should be avoided or limited, so as to avoid sounding a ringtone in response to a receipt of a paging reques