According to the personal library, the difference between portable wifi and flow card is as follows:

Internet access: Portable WiFi needs to be inserted with a SIM card, and multiple devices can be connected to the Internet at the same time; The flow card is a kind of online voucher inserted on the mobile phone or data card, which has the characteristics of flow restriction and speed restriction, and cannot connect multiple devices to the Internet at the same time.

Network coverage: Portable WiFi generally uses 4G network, and there may be no 4G network coverage in remote areas; Traffic cards usually use the operator's network, which has a wider coverage;

Ease of use: the flow card is very simple to use, and you can surf the Internet by inserting a mobile phone or data card; You don't need to insert a card, and you don't need to set a hotspot. Just open swWiFich and you can start using it.

Portable wifi is a device that can convert wired, 2G, 3G, 4G network or Internet connections on a computer into wifi signals.