All Dual SIM devices in market are Dual SIM Dual Standby (DSDS). You can insert two Nano SIMs into the device at once. DSDS devices can use one data network at a time, and receive or make calls on one SIM at a time. Users can choose the default SIM for each function - data, voice, and text messaging. If the first SIM is on an active call, incoming calls to the second SIM will be routed to voicemail. If the phone you purchased last year is a physical Dual SIM device, it is likely that all other smartphones will function the same way. Thanks!
Answered by: PB Tech on 3 March 2021