Methods and systems for SIM management on a DSDA/DSDS device. Methods and systems for Subscriber Identity Module (SIM) management on a User Equipment (UE) are provided. The UE includes one of, a Dual SIM Dual Active (DSDA) UE, or a Dual SIM Dual Standby (DSDS) UE. A method disclosed herein includes selecting a SIM from dual SIM for at least one application to establish at least one Protocol Data Unit (PDU) session. The method includes selecting the SIM for the at least one application based on, at least one of, UE Route Selection Policy (URSP) rules of each SIM, Local Area Data Network (LADN) Data Network Names (DNNs) available per SIM, a current status of each SIM, and an availability of Public Network Integrated Non-Public Network (PNI-NPN) services for each SIM.