lets check dmesg:::
........
USB 2-1: Product EG25-G
USB 2-1: Manuf: Quectel
USB 2-1: USB disconnect, device #2
USB 2-1: new high-speed usb device # 3 using ehci-platform
USB 2-1: device descriptor read/64, error -71
usbcore: registered new interface driver usbserial_generic
usbcore: registered new interface driver qmi_wwan
usbcore: registered new interface driver option
usbserial: usb serial support registered for GSM modem (1-port)