Setting up a USB 3G/4G modem on a Raspberry Pi is not a simple task. There are many guides available using the now defunct sakis3g script, but getting my modem to work required a bit more understanding. The main problem is that most USB modems act as two devices - a USB storage device and a USB modem. When plugged in to the Raspberry PI the device is usually in USB storage mode. There is a program called usb_modeswitch that we can use to do the switching The other missing part is a way to connect to the cellular network with the USB modem from the Raspberry. For this we will use the classic ppp and wvdial programs. Requirements Raspberry PI computer Raspbian OS installed USB 3G Modem 5V 1A power supply for the Raspberry PI 1. Install required software Connect your Raspberry PI to the internet via LAN or Wifi Open a terminal window and enter: sudo apt-get update sudo apt-get install ppp usb-modeswitch wvd...
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