Users can also choose to make one line their default data usage line, but they will still be able to receive and send calls & texts on both lines. These features work together seamlessly to guarantee that users can take advantage of dual SIMgameexcel technology without having to deal with difficult procedures or service outages. Compatibility with multiple carriers and networks is a crucial factor to take into account when using the iPhone 15's dual SIM slots. Due to its extensive global carrier support, the device is a desirable choice for expatriates and travelers from other countries. However, because not all carriers provide this service, users must confirm that the carriers they have selected support eSIM technology.