1. The GPS tracker cannot fully locate

　　Unlike mobile phone broadcasts, GPS trackers have signals everywhere, and many things will affect the GPS locator to search for stars. Including the distribution status of positioning satellites, buildings, viaducts, radio waves, trees, etc. Generally speaking, looking up from the position of the GPS tracker, the area where you can see the sky is the area where the GPS tracker can receive signals.

　　2. Don't use it once or twice to decide the quality of the GPS tracker

　　Since the status of the positioning satellites is different every day, it may be possible for the same place to receive full messages in the morning, but it may not be able to locate at night, or it may be that the positioning status is not good for several days in a row. Therefore, we have to use it for a long time to be able to determine whether the GPS tracker you are using is good or bad, and do not jump to conclusions blindly.

　　3. Compare the quality of GPS trackers

　　When we choose a GPS tracker, we must learn to compare and compare. Many people who buy a new GPS tracker will say that the one I used before is better, but this is not correct, because the time and place of use are different. The final result is much worse, and it must be used for a long time to feel the difference between the two gps trackers.

　　4. The reception intensity meter of GPS is no longer enough as a reference for GPS purchase

　　Everyone who buys a GPS tracker will only look at the reception table in the electronic map. It may have been quite accurate in the past, but the current GPS tracker has false signals or simulated signals in order to make the reception table look good. and many more. Receivers are beautiful, but they may not be positioned correctly or even displayed correctly. Therefore, when you choose a good GPS tracker, you must have a comprehensive understanding. Don't choose it because of its shape. In fact, there are still many good GPS trackers on the market.

　　5. There is no GPS tracker for indoor positioning

　　Basically, if there is no signal indoors, there is no signal, which is true indoor positioning. To be indoors from the coldstart, but still able to locate, is the real indoor positioning, but basically indoor positioning is meaningless, because I can't navigate at home.

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