Huawei E8377 Hilink CarFi is a mobile WiFi hotspot, which could provide the wireless internet in the car. Once plugged into the cigarette lighter, Huawei Hilink CarFi E8377 supplies users with download speeds of up to 150 Mbit/s, and up to ten devices can be connected. The Hilink CarFi could be controlled by app in smartphones with Android or iOS system. There is a SIM card slot in the CarFi, after SIM inserted, the E8377 could work as a wireless hotspot. The USB Port is to charge mobile electronics such as smartphones or Pads. Huawei E8377 CarFi has the similar functions as Huawei E8278, but it can directly plug in the car and work.