Abstract: Embodiments of the present disclosure provide a roaming network access method and apparatus, where the method includes: obtaining a mobile country code MCC of a roaming area; obtaining a preferential roaming list, where the preferential roaming list is used to indicate information about at least one network that a user preferentially attempts to register with when the user is roaming; selecting a network that matches the MCC from the preferential roaming list and searching for the selected network; and each time a network is found by the searching, attempting to register with the found network. By means of the roaming network access method and apparatus provided in the embodiments of the present disclosure, duration of network searching performed by user equipment is shortened, time spent by the user equipment on initial network access in the roaming area is reduced.

Abstract: Embodiments of the present invention provide a roaming network access method and apparatus, where the method includes: obtaining a mobile country code MCC of a roaming area; obtaining a preferential roaming list, where the preferential roaming list is used to indicate information about at least one network that a user preferentially attempts to register with when the user is roaming; selecting a network that matches the MCC from the preferential roaming list and searching for the selected network; and each time a network is found by the searching, attempting to register with the found network. By means of the roaming network access method and apparatus provided in the embodiments of the present invention, duration of network searching performed by user equipment is shortened, time spent by the user equipment on initial network access in the roaming area is reduced.

Abstract: Embodiments provide a method for searching for a network by a terminal, a terminal, and a storage medium, which reduce network search time. A terminal controls a first wireless communications module to search a first band for a first camping frequency channel number and controls a second wireless communications module to search a second band for a second camping frequency channel number. Therefore, compared with the prior art in which both the first wireless communications module and the second wireless communications module search a full band for a network, the embodiments can accelerate a network search process of the terminal. If the first wireless communications module finds a to-be-camped-on frequency channel number that meets a preset condition, the terminal shares the to-be-camped-on frequency channel number found by the first wireless communications module with the second wireless communications module, thus shortening a network search time of the second wireless communications module.

Abstract: A network search display method for a terminal device and the terminal device, where the method includes obtaining, by the terminal device, a network search instruction instructing the terminal device to start searching for a network, searching, by the terminal device, a network frequency band in a first network standard for an available network according to the network search instruction, and displaying, by the terminal device to the user, the available network found in the network frequency band in the first network standard. Hence, the method and the terminal device improve user experience.

Abstract: Embodiments of this application provide a terminal configuration method and an apparatus. When determining that a SIM card in a terminal is powered on, a wireless communications module reads SIM card information such as some or all of an international mobile subscriber identity IMSI, a service provider name SPN, or a global identifier ID GID in the SIM card from the SIM card. Then, the SIM card information obtained by the wireless communications module is sent to an application processor. The application processor obtains an operator parameter based on the SIM card information reported by the wireless communications module, and configures the terminal. Therefore, at a moment at which the SIM card is powered on, the wireless communications module obtains the SIM card information from the SIM card, so that a timing for the UE to obtain the IMSI is advanced.

Abstract: Embodiments provide a method for searching for a network by a terminal, a terminal, and a storage medium, which reduce network search time. A terminal controls a first wireless communications module to search a first band for a first camping frequency channel number and controls a second wireless communications module to search a second band for a second camping frequency channel number. Therefore, compared with the prior art in which both the first wireless communications module and the second wireless communications module search a full band for a network, the embodiments can accelerate a network search process of the terminal. If the first wireless communications module finds a to-be-camped-on frequency channel number that meets a preset condition, the terminal shares the to-be-camped-on frequency channel number found by the first wireless communications module with the second wireless communications module, thus shortening a network search time of the second wireless communications module.

Abstract: Embodiments of the present invention provide a roaming network access method and apparatus, where the method includes: obtaining a mobile country code MCC of a roaming area; obtaining a preferential roaming list, where the preferential roaming list is used to indicate information about at least one network that a user preferentially attempts to register with when the user is roaming; selecting a network that matches the MCC from the preferential roaming list and searching for the selected network; and each time a network is found by the searching, attempting to register with the found network. By means of the roaming network access method and apparatus provided in the embodiments of the present invention, duration of network searching performed by user equipment is shortened, time spent by the user equipment on initial network access in the roaming area is reduced.

Abstract: Embodiments of the present invention provide a roaming network access method and apparatus, where the method includes: obtaining a mobile country code MCC of a roaming area; obtaining a preferential roaming list, where the preferential roaming list is used to indicate information about at least one network that a user preferentially attempts to register with when the user is roaming; selecting a network that matches the MCC from the preferential roaming list and searching for the selected network; and each time a network is found by the searching, attempting to register with the found network. By means of the roaming network access method and apparatus provided in the embodiments of the present invention, duration of network searching performed by user equipment is shortened, time spent by the user equipment on initial network access in the roaming area is reduced.

Abstract: Embodiments of the present invention relate to the field of wireless communications technologies, and provide a switching method. The method specifically includes: when user equipment is in idle mode, acquiring a 2G/3G base station candidate set; when initiating a voice service, sending a CSFB request message to an LTE base station; receiving a standard and a frequency of a target 2G/3G base station that are sent by the LTE base station to the user equipment; determining, according to the standard and the frequency of the target 2G/3G base station, whether the 2G/3G base station candidate set includes the target 2G/3G base station; and if the 2G/3G base station candidate set includes the target 2G/3G base station, switching, from the LTE base station to the target 2G/3G base station according to the standard and the frequency of the target 2G/3G base station.

Abstract: Embodiments of the present disclosure disclose a mobility management procedure initiation method and a device, where the method may include: when a quantity N of failures of a mobility management procedure initiated by a device to a core network entity is greater than or equal to a first threshold, determining, by the device, whether N pieces of failure information include first information used to indicate a failure in establishing a radio resource control protocol connection; when the device determines that the N pieces of failure information include the first information, setting, by the device, an initiation condition parameter for initiating the mobility management procedure; and initiating, by the device, the mobility management procedure based on the initiation condition parameter. The present disclosure can improve a network access speed of the device.

Abstract: Embodiments of the present disclosure provide a method for selecting a public land mobile network PLMN, and an apparatus and a device for same. The method includes: during a process of selecting a network by a mobile terminal, if it is learned by means of determining that a registered public land mobile network RPLMN and a home public land mobile network HPLMN correspond to the mobile terminal are unavailable, acquiring a PLMN network in a PLMN list pre-stored in the mobile terminal, to perform a registration, wherein the PLMN list includes network information of one or more other PLMN networks that are selected and successfully registered.

Abstract: A method can be implemented by a user equipment to update RPLMN information. A PLMN identifier is selected from an available PLMN identifier set that includes PLMN identifiers with RPLMN information, HPLMN information, UPLMN information, and OPLMN information separately. A location update request message that carries the PLMN identifier is sent to a mobile switching center. A TMSI reallocation command is acquired from the mobile switching center according to the location update request message. It is determined whether location update acceptance information that is returned by the mobile switching center according to the location update request message is currently acquired. An operation of updating the PLMN identifier to registered public land mobile network RPLMN information is performed when the location update acceptance information is acquired and the operation of updating the PLMN identifier to RPLMN information is skipped when the location update acceptance information is not acquired.

Abstract: A network registration method and apparatus, and a mobile terminal are presented. During re-registration with a network, after receiving a channel allocation rejection message sent by the network, a mobile terminal sorts all available frequency channels according to network resource statuses of frequency channels with which network registration failed before and that are in a low priority list. And then the mobile terminal tries to camp on all the available frequency channels according to an order of the sorting to determine a frequency channel to be camped on. The mobile terminal sends a network registration message to register with the frequency channel to be camped on.

Abstract: Embodiments of the present disclosure disclose a method for a terminal to camp on a cell. A method for a terminal to camp on a cell includes acquiring, by a mobile terminal, a signal of an available cell, where when the mobile terminal is not camped on a serving cell, the signal of the available cell includes a signal, detected by the mobile terminal, of the cell, or when the mobile terminal camps on the serving cell, the signal of the available cell includes a signal of the serving cell and a signal of a neighboring cell of the serving cell. When a cell signal value of the available cell meets a standard cell access criterion, selecting, by the mobile terminal according to a signal strength and a historical camp-on success rate, an effective cell from the available cell, and camping, by the mobile terminal, on the effective cell.

Abstract: Embodiments of the present disclosure disclose a mobility management procedure initiation method and a device, where the method may include: when a quantity N of failures of a mobility management procedure initiated by a device to a core network entity is greater than or equal to a first threshold, determining, by the device, whether N pieces of failure information include first information used to indicate a failure in establishing a radio resource control protocol connection; when the device determines that the N pieces of failure information include the first information, setting, by the device, an initiation condition parameter for initiating the mobility management procedure; and initiating, by the device, the mobility management procedure based on the initiation condition parameter. The present disclosure can improve a network access speed of the device.

Abstract: Embodiments of the present disclosure provide a method for selecting a public land mobile network PLMN, and an apparatus and a device for same. The method includes: during a process of selecting a network by a mobile terminal, if it is learned by means of determining that a registered public land mobile network RPLMN and a home public land mobile network HPLMN correspond to the mobile terminal are unavailable, acquiring a PLMN network in a PLMN list pre-stored in the mobile terminal, to perform a registration, wherein the PLMN list includes network information of one or more other PLMN networks that are selected and successfully registered.

Abstract: Embodiments of the present invention provide a roaming network access method and apparatus, where the method includes: obtaining a mobile country code MCC of a roaming area; obtaining a preferential roaming list, where the preferential roaming list is used to indicate information about at least one network that a user preferentially attempts to register with when the user is roaming; selecting a network that matches the MCC from the preferential roaming list and searching for the selected network; and each time a network is found by the searching, attempting to register with the found network. By means of the roaming network access method and apparatus provided in the embodiments of the present invention, duration of network searching performed by user equipment is shortened, time spent by the user equipment on initial network access in the roaming area is reduced.

Abstract: A method can be implemented by a user equipment to update RPLMN information. A PLMN identifier is selected from an available PLMN identifier set that includes PLMN identifiers with RPLMN information, HPLMN information, UPLMN information, and OPLMN information separately. A location update request message that carries the PLMN identifier is sent to a mobile switching center. A TMSI reallocation command is acquired from the mobile switching center according to the location update request message. It is determined whether location update acceptance information that is returned by the mobile switching center according to the location update request message is currently acquired. An operation of updating the PLMN identifier to registered public land mobile network RPLMN information is performed when the location update acceptance information is acquired and the operation of updating the PLMN identifier to RPLMN information is skipped when the location update acceptance information is not acquired.

Abstract: Embodiments of the present invention relate to the field of wireless communications technologies, and provide a switching method. The method specifically includes: when user equipment is in idle mode, acquiring a 2G/3G base station candidate set; when initiating a voice service, sending a CSFB request message to an LTE base station; receiving a standard and a frequency of a target 2G/3G base station that are sent by the LTE base station to the user equipment; determining, according to the standard and the frequency of the target 2G/3G base station, whether the 2G/3G base station candidate set includes the target 2G/3G base station; and if the 2G/3G base station candidate set includes the target 2G/3G base station, switching, from the LTE base station to the target 2G/3G base station according to the standard and the frequency of the target 2G/3G base station.

Abstract: A network registration method and apparatus, and a mobile terminal are presented. During re-registration with a network, after receiving a channel allocation rejection message sent by the network, a mobile terminal sorts all available frequency channels according to network resource statuses of frequency channels with which network registration failed before and that are in a low priority list. And then the mobile terminal tries to camp on all the available frequency channels according to an order of the sorting to determine a frequency channel to be camped on. The mobile terminal sends a network registration message to register with the frequency channel to be camped on.