At present, the most common automobile 4G LTE GPS tracking device in the market is generally divided into wiring type, installation free type and OBD mode. Today, let's talk about the topic of installation free 4G LTE GPS tracking device. 4G LTE GPS tracking device is not required. It can be divided into vehicle 4G LTE GPS tracking device, personnel 4G LTE GPS tracking device and pet 4G LTE GPS...