In recent years, with the rapid development of the economy and society, the social economy has continued to develop and the people's living standards have continuously improved. A safe, comfortable and prosperous life is the goal that people strive to pursue. The GPS tracker device officially entered the line of sight of people.
For example, if you buy a car, in order to protect the safety of the car, a GPS tracker device will be installed in the car; the child will be equipped with a GPS tracker device to ensure its safety; if the elderly are lost, they will also be equipped with a GPS tracker device.
And from the network above a search GPS tracker device, there will be a variety of information, how to buy GPS tracker device, you can go to other articles to see, this mainly introduces the purchase of GPS tracker device, need to avoid some traps.
1, GPS tracker device no SIM card free flow fee for no lifetime.
First of all, the GPS tracker device without the sim card does not exist. We can look at the principle of GPS: GPS tracker device to obtain satellite signals -> send to the server through the network -> the server calculates the latitude and longitude and resolves the specific location -> displayed through the PC or APP.
As can be seen from the principle, the main purpose of the GPS tracker is to obtain satellite signals and send them to the server, and the information is sent to the network, that is, the network that needs the SIM card to send. So the GPS tracker without a SIM card does not exist.
In fact, these are the activities that merchants engage in for promotion. Do you think that the traffic of GPS tracker is really free? The partners who bought the tracker know that if you buy the tracker and buy the card together, the card is generally free for one year, and the fee will be paid from the second year. Some businesses will seize this. Install the SIM card in the locator, so that you can buy the tracker device at the same time, the first year is of course you do not need to recharge any traffic charges, the second year locator card traffic is exhausted, your transaction The rights protection time has passed, and the return can not be retired, and even the business can not find it.
The built-in SIM card has a drawback, that is, the SIM card cannot be replaced, and the tracker is about to be reimbursed when the SIM is damaged.
2, using base station positioning to impersonate GPS positioning.
The price of GPS tracker devices on the market varies greatly, with dozens of dollars and hundreds of pieces. Why is it so different?
First of all, in terms of quality, manufacturer, after-sales and other factors, it is very likely that you bought a fake GPS tracker. Many unscrupulous merchants will use the tracker positioned by the base station as a GPS tracker to fool people who don't understand.