1, the way to convert into WiFi: portable wifi is a device that converts wired networks, 3G networks or 4G networks into wifi signals.
The mobile phone hotspot refers to the mobile phone's reception of GPRS, 3G signal or 4G signal into wifi signal and then sent out, so that the mobile phone has become a WIFI hotspot.
2, the way of consuming traffic is different: portable wifi only provides traffic for the connected device, and there is no consumption in the background, even if it is consumed, it is a few KB. The mobile phone hotspot, not only the device connected to the hotspot is consuming traffic, but also the mobile phone's background hotspot program is also consuming traffic, and it is also consuming the phone's electricity.
3, the experience is different: portable wifi is generally similar to mobile phones. Especially USB, plug a mobile power can be. It's less battery than a cell phone hotspot. Mobile phone hotspots are also more convenient, but the background is more expensive, and is affected by mobile phone signals, if there is no terminal connected for a period of time, the hotspot will close itself, which is more troublesome.