Dual SIM Dual Standby

Does the RM520N support dual SIM dual active? Also, is there a firmware upgrade? I’m using RM520NGLAAR01A08M4G.

hi,
Do you mean using 2 sim cards at the same time? There are 2 card slots.

Sorry, I meant dual sim dual standby (DSDS).

hi,
The module has 2 (U)SIM interfaces and supports dual-SIM single standby function. Dual SIM dual standby is not supported.