Patent ID: 8446862

Claim:
A radio communication device operating on a battery and connectable to a plurality of radio communication networks, the device comprising: a network connection unit configured to connect to each of the radio communication networks by use of radio signals; a voltage detector configured to detect an output voltage outputted from the battery; a communication request receiver configured to receive a communication request from an application executed in the radio communication device, the communication request involving connection to two or more requested ones of the radio communication networks via the network connection unit; a voltage drop amount acquisition unit configured to, for each of the requested radio communication networks, acquire a drop amount of the output voltage corresponding to a connection to the radio communication network; and an operation controller configured to subtract one or more of the drop amounts from the output voltage to determine one or more expected voltages, if at least one of the one or more expected voltages is less than or equal to a predetermined threshold value, select a fewer one or more of the requested radio communication networks for which an expected voltage exceeds the predetermined threshold value, and cause the network connection unit to connect to the selected one or more radio communication networks.