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If you look at the top of your phone, you will usually see a little symbol that says 3G or 4G. The "G" stands for the "generation"(代)of your mobile network(网络). But these symbols will mean(意味着) that things of the past after 5G network fully arrives.
The 5G mobile network is 100 times faster and has 1,000 times more capacity(容量)compared with the 4G mobile network.
In recent years, China pays great attention to the commercial(商业)use of 5G and tries to build the infrastructure(基础设施)for a 5G network. On March 30th, 2019, Shanghai vice-mayor(副市长)Wu Qing made the first 5G video call on a Huawei Mate 10 smartphone, CGTN reported. Shanghai is also the first city in China to start testing 5G network.
5G will let people download and upload data(数据)faster than ever before. But 5G will not just bring faster mobile Internet. People can use it for many other things, too. For example, 5G will help to make self-driving cars safer. Today's self-driving test cars has one problem—the lag(滞后).When the car "sees" anobstacle, it sends this information to a data center and gets instructions(指示).
However, it takes time to send and get this information. With this kind of lag, the cars might crash(撞击)because they don't get instructions in time. With 5G, this lag will be greatly reduced(减少)and make the cars safer.
5G could also be used to make the Internet of Things (IOT) stronger. This refers to a large online network that connects(联系)all things and people. Fast Internet speeds(速度)will be the key to developing this technology(技术). For example, with the Internet of Things(IOT), your fridge could order eggs online when it finds there are no eggs left inside. How amazing!