1. When searching in the car, the GPS should be used to install the GPS on the front windshield, and the front windshield should also be checked whether the windshield is affixed. Because the metal membrane has a shielding effect on wireless signals, the strength of the satellite signal is too weak and cannot be positioned.

　　2. If GPS is newly bought for the first time. Or it is already in the cold start, please go to the empty place to set the outside of the car to locate the car. This positioning speed is relatively fast. There are often no abnormal phenomena. If you go directly on the road when the cold start, even if the signal is strong, it may not be positioned when you reach the destination! This is very important. After the positioning, put it in the car to see if the signal in the car will be worse. In addition, the longer the single GPS uses, the longer the time for satellite data can be preserved. If you do not need to be (such as one or two weeks) for a long time, GPS may return to the cold start state.

　　3. If you enter the basement Z, close the GPS before entering the basement, so the path information will exist in the module. When you come out, you will find the satellite soon when you open the GPS.

　　4. According to the experience of netizens, when starting GPS, Z is good, do not charge (it seems to affect the speed of finding satellites), and then charge after finding the satellite.

　　5. During the outdoor positioning, you must first stay away from high -rise buildings or places with blocking above (such as under the bridge of overlap). Some special places will not be positioned due to interference signals such as radiation. If you cannot locate somewhere, move to ten meters away.

　　6. If the above situation is excluded and the stars cannot be found for a long time, then the destination or restart or press the "reset key" to restart.

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Origin of GPS development

GPS development in the United States