Take the car navigator as an example. The car navigator market is like a mobile phone. There are too many brands. If you go to the market by yourself, it will dazzle you and you don't know which brand to choose.
Choose navigation skill one: choose the products of regular manufacturers.
At present, there are several large manufacturers of car navigation products in China, such as Tuobang, Good Helper and Gefei.
As a high-tech product, car navigation involves many high-tech fields. A car navigation product with complete functions and high quality needs strong technology and manufacturing strength. Another reason for choosing regular manufacturers is that they generally pay more attention to after-sales service and have a perfect after-sales service system. Listed companies, in particular, are subject to the supervision of the public and the CSRC at any time. When problems arise, they often dare to take responsibility instead of shirking responsibility.
Choose navigation skill 2: software upgrade is very important.
GPS is an electronic information product, which can be upgraded through technical transformation like a computer. The core part of GPS navigation is the map. Generally speaking, the map needs to be updated once a year at the latest. At present, many GPS brands provide free upgrade services, but some companies do not promise to update maps or charge fees. Consumers must understand clearly when buying.
Choose navigation skill 3: the signal receiving ability needs a good chip.
As a navigation product, we are most concerned about its satellite receiving ability, that is, signal receiving ability. At present, most of the car GPS sold in the market will use the third generation chip of SiRFStarIII. The advantage of this chip is that it can capture and track signals under occlusion and bad weather conditions, and reduce the interference of high-rise buildings on signals. In addition, the quality of the chip is directly related to the speed and accuracy of the calculation path. To the same destination, different chips may have different routes, and what we need is the best route.
Let's talk about these points briefly. In short, if you want to buy it, you should go to an acquaintance to buy it. At least the quality is guaranteed, and problems can be solved in time.