Patent ID: 8121076

Claim:
A network listening method of a mobile phone comprising a code division multiple access (CDMA) chip, an electrically programmable read-only-memory (EPROM) chip, and a first user identity module (UIM) card, the network listening method comprising: burning identification information of a second UIM card into the EPROM to generate a virtual second UIM card, the second UIM card being not embedded in the mobile phone; obtaining an identification of the first UIM card using a physical control layer of the mobile phone; searching a communication network based on a CDMA network protocol using the first UIM card; recording first network listening parameters of the first UIM card, the first network listening parameters comprising a first listening frequency, a first listening channel, and a first listening duration; controlling the first UIM card to log in the communication network according to the first network listening parameters; obtaining the burned identification information of the virtual second UIM card using the physical control layer; searching the communication network based on the CDMA network protocol according to the burned identification information; recording second network listening parameters, the second network listening parameters comprising a second listening frequency, a second listening channel, and a second listening duration; controlling the mobile phone to log in the communication network according to the second network listening parameters; determining if the first listening frequency equals to the second listening frequency, and if the first listening channel equals to the second listening channel; and executing a first network listening method to listen to the communication network, if the first listening frequency equals to the second listening frequency, and the first listening channel equals to the second listening channel; or executing a second network listening method to listen to the communication network, if the first listening frequency does not equal to the second listening frequency, and/or the first listening channel does not equal to the second listening channel.