What is tracking and positioning?

Beijing Da Rui Xuntong X-wd has been popular among netizens since it was listed in "0-1-0-8-7-9-0-1-0" in 2006, but it must be installed on the target mobile phone, which also has certain requirements, so it has certain limitations. At present, the sales positioning chip of Beijing Tianyu Monitoring Technology is installed on your own mobile phone. Enter the other party's mobile phone number to know his current location, call content and short message content. All operations are done through your own mobile phone. The operation and use are very simple.