DSDA is only supported in Thailand, Singapore, Hong Kong, and India. Other regions/countries are not supported.
For your reference, here is more information about DSDA:
1. DSDA allows the device to actively use two SIM cards simultaneously for both voice and data. If one SIM card is in a call, the other card can still receive incoming calls or use data services;
2. Unlike DSDS, where one SIM card is inactive when the other is in use, DSDA ensures that both SIM cards are always on and available for calls and data, providing enhanced flexibility and continuous connectivity;
3. DSDA requires the phone to have two independent radio frequency (RF) modules, allowing both SIM cards to remain active simultaneously.