1. In car Wi Fi devices refer to wireless routers that load mobile traffic cards on the vehicle and transmit Wi Fi signals through 3G/4G/5G traffic to in car Wi Fi, wireless radio frequency, and other technologies for Wi Fi hotspots. They can be connected to the vehicle using pads, mobile phones, and laptops, which actually transmit Wi Fi signals through traffic. 4G can only be inserted into the phone to access the internet, but the phone can share the network, but the traffic consumption is fast, requiring users to activate a traffic plan with 4G phone card traffic.

　　2. Wi Fi is a technology that can wirelessly connect terminals such as personal computers and handheld devices (such as pads and mobile phones) to each other. In fact, it is a high-frequency radio signal. Wi Fi is a brand of wireless network communication technology, held by the Wi-Fi Alliance. The purpose is to improve the interoperability between wireless network products based on the IEEE 802.11 standard.

　　4G is the abbreviation for fourth generation communication technology, and G is the abbreviation for generation. The 4G system can download at the speed of 100Mbps, 2000 times faster than the current dial-up Internet access, and upload at the speed of 20Mbps, and can meet the requirements of almost all Almost all for wireless services.

　　4. In terms of the price that users are most concerned about, 4G and fixed broadband networks are on par in terms of price, and the billing methods are more flexible and flexible. Users can fully determine the services they need based on their own needs. In addition, 4G can be deployed in areas not covered by DSL and cable TV modems, and then extended to the entire region.

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