Patent ID: 9253813
Filing Date: 2016-02-02
CPC Classification: H04W

Claim Text:
1. A communication management method for a mobile communication device, wherein the mobile communication device includes a first wireless communication unit, a second wireless communication unit, a first subscriber identity module (SIM) and a second SIM and the first wireless communication unit and the second wireless communication unit are electrically coupled to the first subscriber identity module and the second subscriber identity module respectively, the method comprising: connecting the first wireless communication unit to a first service network according to first information provided by the first SIM; connecting the second wireless communication unit to a second service network according to second information provided by the second SIM; using the first wireless communication unit to establish a first call connection with a remote communication device through the first service network; after establishing the first call connection, comparing quality of a first signal received by the first wireless communication unit from the first service network and quality of a second signal received by the second wireless communication unit from the second service network; when the quality of the second signal compared is superior to the quality of the first signal compared, using the second wireless communication unit to dial the first SIM to establish a second call connection with the first wireless communication unit through the second service network; after establishing the second call connection, automatically establishing a first multi-call connection among the first and second wireless communication units and the remote communication device; and after establishing the first multi-call connection, automatically dropping the first call connection and establishing a third call connection between the second wireless communication unit and the remote communication device in place of the first call connection.