How does wifi compare to 2G and 3G network energy consumption? 20

Although WiFi is a new bright spot in the development of the communication industry, it should mainly be positioned as a supplement to the existing communication system. The development of WiFi in China has only emerged in recent years, but many places are still blind spots, unlike European and American countries that have very complete WiFi networks. As a mobile terminal platform, the main development of mobile phones in China is mainly subject to national policies, and more importantly, the restrictions of mobile operators, especially the GPRS implemented by China Mobile has seriously affected the development of WiFi.

WiFi is still immature in China, so not many manufacturers are willing to invest in the development of portable outside WiFi equipment. And now due to the opening of the 3G network, China Unicom and Telecom have made it very clear that they will vigorously develop the wifi network, so in the future, the users of these two companies are likely to use wifi licensed mobile phones, and the wifi in the outside world is in the past after all.

The changes in the market should meet the needs of people, and now they are vigorously developing built-in wifi, and the outside wifi is inconvenient after all.

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1) 2G, 3G is to use the mobile phone card to access the Internet, it is money, 3G is faster than 2G, basically you can go anywhere.

2) WiFi is broadband wireless Internet access, no mobile phone card is required, Internet access is free, network speed is determined by broadband speed, if it is tens of m fiber, the speed is very fast.

2G and 3G are the operator's mobile networks, mobile phones generally have 2G or 3G when they have a signal, 3G is generally faster than 2G, WiFi is the network sent by the router, which is generally only available in specific locations, (generally) is free.

2G, the second generation of mobile phone communication technology specifications, with digital voice transmission technology as the core. It is generally defined as the inability to directly transmit information such as e-mail, software, etc.; It only has the technical specifications of mobile phone communication such as call and some transmission such as time and date.

3G is the third generation of mobile communication technology, which refers to cellular mobile communication technology that supports high-speed data transmission. 3G services can transmit voice and data information at the same time, and the rate is generally more than a few hundred kbps. Faster than 2G.

Wi-Fi is a technology that wirelessly connects terminals such as PCs, handheld devices (e.g., pads, mobile phones) to each other, and is in fact a high-frequency radio signal. This has nothing to do with 2G, 3G.

First, the coverage of radio waves is wide, and the transmission speed is high, up to 300Mbps and the threshold for manufacturers to enter this field is relatively low. Manufacturers only need to set up "hot spots" in densely populated places such as airports, stations, coffee shops, libraries, etc., and connect the Internet to these places through high-speed lines. Fourth, there is no need for wiring.

Compared with 3G and WiFi, WiFi is relatively a wireless network application technology within a fixed range. The third generation of mobile communication technology (3G) refers to the cellular mobile communication technology that supports high-speed data transmission. 3G is expensive in mobile networks, but the transmission rate is very low compared to Hongxun WiFi.

There are two ways to access the network, the purpose is different, so take what you need. This is my understanding.