Method for determining access method of mobile terminal, storage medium, and mobile terminal

A non-transitory storage medium, storing a plurality of instructions, which are loaded by a processor to execute the steps of:

• obtaining parameter information of a subscriber identity module (SIM) card in response to inserting the SIM card into a mobile terminal;
• based on the parameter information, searching a preset database for access point information corresponding to the parameter information, wherein the access point information comprises an access point type and an access identifier;
• and
• in response to that the access point information is found, determining a corresponding access way of the mobile terminal based on the access point information, wherein the access way comprises Voice over Long Term Evolution (VoLTE) and Voice over Wireless-Fidelity (VoWiFi),
• wherein before obtaining the parameter information of the SIM card in response to inserting the SIM card into the mobile terminal, the method comprises:
• pre-storing a configuration file in the mobile terminal for the access ways, wherein the configuration file comprises the parameter information of the SIM card, the access point type and the access identifier,
• wherein after searching a preset database for access point information corresponding to the parameter information based on the parameter information, wherein the access point information comprises an access point type and an access identifier, the method further comprises:
• in response to that the access point information is not found, sending a public data network (PDN) request to create a connection by using a VoLTE mode;
• determining the VoLTE mode as a connection way of the mobile terminal if the connection is created;
• and
• determining a VoWiFi mode as the connection way of the mobile terminal if the connection is not created.

A mobile terminal, comprising:

• a processor, for implementing instructions;
• and
• a storage device, for storing a plurality of the instructions, which are loaded by their processor to execute the steps of:
• obtaining parameter information of a subscriber identity module (SIM) card in response to inserting the SIM card into a mobile terminal;
• based on the parameter information, searching a preset database for access point information corresponding to the parameter information, wherein the access point information comprises an access point type and an access identifier;
• in response to that the access point information is found, determining a corresponding access way of the mobile terminal based on the access point information, wherein the access way comprises Voice over Long Term Evolution (VoLTE) and Voice over Wireless-Fidelity (VoWiFi);
• in response to that the access point information is not found, sending a public data network (PDN) request to create a connection by using a VoLTE mode;
• determining a connection way of the mobile terminal based on a result of the connection;
• binding the access identifier and the access point type that correspond to the determined connection way to the parameter information and storing the same in the database to update the database;
• and
• sending the updated database to a vendor server corresponding to the mobile terminal such that the vendor server updates a factory-configured configuration file based on the updated database, and the updated configuration file is delivered to all the corresponding mobile terminals in a form of a package of updates, so as to update the configuration file for every mobile terminal.