If you save yourself through GPS.4G GPS Tracker

　　1. Use the built -in GPS chip of the mobile phone, and take the Xiaomi mobile phone as an example. Open the compass, you can determine your own GPS coordinates through the two numbers "North Latitude" and "East Classics" below.

　　GPS data

　　2. Put the obtained seat logo on the Gaode map to get the current position and view the line. (Of course, you can also be a map of Baidu, Google Map, depending on your habits)

　　Because mobile GPS positioning generally requires online map services, that is to say, we need to connect to the network with signals, and upload the data and mark the position on the map to achieve the purpose of positioning. However, this positioning method can only be used in the signal area, and once it is out of the signal coverage area, there is no way to use it. And even in a signal area, online GPS positioning will fail due to mobile phone traffic costs. In this way, we need to use offline maps for GPS positioning. The offline map can use the GPS positioning function without networking because we download the map data to the mobile phone.

　　3. Pay attention to the power of the mobile phone

　　The GPS chip of a smartphone needs to receive the satellite playback data in real time to calculate it to determine your position. Because the location is constantly moving, the space coordinate data of the GPS satellite needs to be accepted uninterrupted. This process will consume a lot of CPUs and memory, and it consumes a lot of consumption of mobile phone power, and it is easy to get power. So pay attention to the power of the mobile phone.

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