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What is the positioning of SMS based on?

It can be located by SMS.

But it is not accurate. The communication company has the base station information when sending the letter, and the cross area covered by several trusted base stations is your location. Generally, this method should be used in major cases, or cases with great and bad influence, or gang cases, because the cost is very high.

Mobile phone location refers to the technology or service that obtains the location information (latitude and longitude coordinates) of the mobile phone or the end user through a specific location technology, and marks the location of the located object on the electronic map. There are two kinds of positioning technologies, one is based on location, and the other is based on the location of base stations in mobile operating networks. The positioning method based on is to use the positioning module on the mobile phone to send its own position signal to the positioning background to realize the positioning of the mobile phone.