Methods for scheduling collided paging occasions of multiple wireless networks and communication apparatuses utilizing the same

A method for handling collided paging occasions a communication apparatus comprising a first subscriber identity card and a second subscriber identity card, the method comprising:

• camping on a first cell via a radio transceiver module with the first subscriber identity card;
• obtaining information regarding a plurality of first paging occasions distributed within a predetermined time interval for the first subscriber identity card, wherein a plurality of first paging messages are planned to be broadcasted on the first cell in the first paging occasions;
• camping on a second cell via the radio transceiver module with the second subscriber identity card;
• obtaining information regarding a plurality of second paging occasions distributed within the predetermined time interval for the second subscriber identity card, wherein a plurality of second paging messages are planned to be broadcasted on the second cell in the second paging occasions;
• detecting a forthcoming time slot of the predetermined time interval in which one of the first paging occasions collides with one of the second paging occasions;
• determining listening to one of the first cell and the second cell in the detected time slot;
• and
• notifying of the determination to the radio transceiver module so as to direct the radio transceiver module to listen to the determined cell to receive a corresponding paging message from the determined cell in the detected time slot.