I have a RUTX12 and am using the latest firmware RUTX_R_00.02.06.1
My only internet option is LTE SIM cards. I bought this router as I thought the load balancing feature would provide double the speed compared to using a router with a single LTE SIM card. I have 2 SIM cards running in the router, however no matter what ratio I use for the load balancing settings it seems that only one SIM card is running at a time rather than both of them working simultaneously. I expected if I used a ratio of 1:1 for both modems they would both work in unison. I am only using one laptop on the router at the moment while testing and as I watch bytes received on the Status-Overview page only one modem operates at a time. This can also be monitored from the Mobile Usage page and the Realtime Data - Traffic page. I've been testing over long periods of time and cannot see both modems working simultaneously yet.
Any help to get both modems working simultaneously would be greatly appreciated thank you.