How to set up Raspberry Pi Zero W as a 3G 4G router

Software Installation

• Copy the following commands to the Raspberry Pi terminal (installation will be completed in about half an hour)

sudo apt update && sudo apt install network-manager network-manager-gnome openvpn openvpn-systemd-resolved network-manager-openvpn network-manager-openvpn-gnome -y && sudo apt purge openresolv dhcpcd5 -y && sudo ln -sf /lib/systemd/resolv.conf /etc/resolv.conf && sudo reboot 

SIM7600 dial-up Internet

• After the above software is installed, a new network icon will appear. Right-click this icon and click 'Edit Connections'.

• Click here to create a connection

• Select Mobile Broadband -> Create

• Select the corresponding region and operator

• Set the APN according to the SIM card operator, and set APN to cmnet.

• Use *99# to dial by default

• Enter the general settings bar -> check 'All users may connect to this network' && 'Automatically connect to VPN'

• Left-click the network icon -> turn on the SIM7600X network card

Open hotspot

• Create Wi-Fi connection

• You can customize the Connection name and SSID, and then select Hotspot mode -> Select Automatic band, as shown below:

• Enter WiFi security settings->WPA & WPA2 Personal->then set your password (at least eight digits, support pure numbers)

• Then set the 'All users may connect to this network' && 'Automatically connect to VPN'

• Turn on the mobile phone and other devices to connect to the hotspot