When we searched the car GPS positioner and GPS positioner in a certain treasure, I believe everyone will see "free card GPS positioner", but what is the GPS locator with free cards? This problem can only be blurred from the details of the product. Some people will think: Which of the two is better than the traditional car GPS positioner?

　　Let ’s introduce the following editors, which are good?

　　In order to better understand the difference between the two, we also need to understand the "character" of SIM card in the GPS positioner. The car GPS positioner will obtain GPS satellite data during use and upload it to the server for decoding. After decoding on the server, we can view the location data on the application. So the most important thing in uploading and downloading is traffic, so this involves the SIM card.

　　Everyone knows that if the mobile phone does not have a SIM card, it is impossible to access the Internet and call in a place without WIFI. Then you can see how important the "state" of the SIM card is.

　　However, now there is a GPS positioner without a SIM card. What a new product it is, it also feels very high in technology. The principle of the GPS positioner that knows the free card is to integrate a traffic chip on the circuit board. This traffic chip uses the company's traffic pool; Flow. Therefore, the GPS positioner can be located without installing cards.

　　However, although the "free card GPS positioner" sounds like a strong sense of technology, they also have disadvantages:

　　1. Stability: If the quality of the stream chip used by some companies is poor, it is often offline on the platform.

　　2. It is not convenient for maintenance: Once the chip fails, you can only replace it by sending it back to the manufacturer for maintenance. If the traditional GPS positioner traffic card fails, you only need to change the traffic card.

　　Of course there are disadvantages and advantages:

　　1. After IM integration, the circuit board can become smaller, making the overall volume of the product smaller.

　　2. Avoid the trouble of inserting the card into the mobile phone. (For this reason, only a small number of customers think that inserting the card is not particularly troublesome, and basically it only needs to be inserted once.)

　　3. Improve waterproof and dustproof ability

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