Dual SIM Dual Standby (DSDS)

Dual SIM Dual Standby (DSDS) is a modern cellular modem architecture that allows a smartphone to handle multiple distinct network routes simultaneously, such as one physical SIM and one digital eSIM. Because the modem connects to two different network operators at once, the hardware broadcasts two separate baseband identities (IMEI 1 and IMEI 2).

This technology revolutionized mobile networks by eliminating the need for two bulky, independent radio antennas inside the phone. Instead,When a provider authorizes a network unlock, they update the device's status in Apple's central activation database. The next time the phone connects to the internet, Albert issues a new activation ticket that instructs the baseband to accept previously restricted SIM cards.