Many users have this doubt. Why didn’t the network speed improve after upgrading the broadband package? With the light cat transmitting Wi Fi signals, why buy a router? How to choose the right router? For the above confusion, today’s central video has popularized science. According to the report, Ms. Zou in Beijing recently installed optical fiber broadband at home. She found that the Internet was not smooth and the Wi Fi signal in some rooms was always bad. After the operator came to the doo...