1, portable wifi is a device that can convert the wired, 2.5G, 3G, 4G network or Internet connection on the computer into wifi signals, which can meet the needs of business and tourism people who are on mobile business trips to rely on the network. Divided into sim card and usb computer for two.
2, the sim card type needs to recharge, with the help of the mobile phone operator's network Internet, can also make data transmission, but the cost is high, can be used in emergency, low cost performance.
3, usb computer type do not recharge, can receive unlimited and as a wireless source to transmit data. The speed is fast.