What is the difference between portable Wi Fi and routers?

The portable WiFi can be plugged into a 4G card, which is actually a mobile hotspot that distributes mobile data signals. Of course, because it uses 4G network, you can take it everywhere and provide network for your phone and tablet wherever you go. 4G Outdoor CPE

But the shortcomings are:
Firstly, its network latency is generally higher than that of routers, as it distributes 4G of data. The latency of 4G is originally slightly higher than that of routers, and in addition, during the forwarding process, the portable WiFi needs to process data, so the latency is even higher. 5G Outdoor Cpe
Secondly, the speed is slower. Currently, the 4G network speed is around 1-2M per second, but routers can generally reach over 10M.
Thirdly, it uses traffic. If you use it all to access the internet, you will have to pay a relatively high monthly traffic fee, even for 4G network cards, which are slightly more expensive than broadband fees. Wifi 6 Outdoor Wireless Ap

The router is connected to a fixed network cable, and the disadvantage of mobile WiFi is its advantage. There is no limit to traffic, faster, more stable, and lower latency. At the same time, it can only be fixed in one place, not flexible, and generally can only be placed at home. Therefore, Beijing Great Wall Broadband recommends installing broadband and configuring routers for those who frequently need to access the internet; For long-term business trips, mobile WiFi can be considered.