Cell search method of terminal and related device and system

A terminal, comprising a first processor coupled to memory storing instruction with first antenna, a second processor coupled to memory storing instruction with second antenna, and a single card;

• wherein the terminal supports camping on a first network by the first processor with the first antenna and a second network by the second processor with the second antenna simultaneously, a circuit switching (CS) domain is preferentially camped on the first network, and a packet switching (PS) domain is preferentially camped on the second network, wherein signal coverage of the first network is better than that of the second network, and a data transmission rate of the second network is higher than that of the first network;
• the first processor is further configured to determine whether a system message received from a cell in the first network carries information of a neighboring cell, wherein the neighboring cell is located in the second network and is neighboring to the cell in the first network;
• the second processor is further configured to search for the neighboring cell based on the information of the neighboring cell when the first processor determines whether the system message carries the information of the neighboring cell;
• the single card stores first information of a subscriber in the first network and second information of the subscriber in the second network;
• the first processor obtains the first information from the single card, and camps the CS domain and the PS domain on the first network based on the first information;
• and
• the second processor obtains the second information from the single card, and camps the PS domain on the second network based on the second information.