To track a cell phone number, it had to be through a communication service provider.
The spy needed to enter the communication service provider’s system and establish a certain signal connection with the cell phone. Then, according to the base station, satellite, and other facilities, they could calculate the time, speed, and distance of the signal transmission and use triangulation to locate it..
Yu Tian roughly understood the principle of this thing. As for how to track it, it was a matter for professionals to move their fingers.
It was not a problem for No. 76 to track the spy in reverse.
She only needed to track the traces that the other party had left in the system of the communication service provider.
Whether it was the internal employees of the communication service provider operating, or the spy invading the server of the communication service provider, tracking the operation of Mina’s phone would leave traces.
