I have a RUT955 with a telstra mobile sim 4g card and I am unable to get the mobile data to connect. Please help.
Could you try updating to the latest firmware found on this link: https://wiki.teltonika-networks.com/view/RUT955_Firmware_Downloads.
Also make sure you are using the correct APN and sometimes the reason why it is not connecting because the sim card is not having
any data package.
Hope it helps