What does 'eSIM' technology allow users to do?

The correct answer focuses on the core functionality of eSIM technology, which allows users to activate a cellular plan without the need for a physical SIM card. This built-in SIM (embedded SIM) enables devices to connect to cellular networks by downloading the necessary information directly from the carrier. This technology simplifies the process of changing carriers or plans, as users can do so through their device settings instead of having to navigate the hassle of swapping SIM cards physically.

Choosing this option demonstrates an understanding of how eSIM technology modernizes connectivity, making it more convenient for users who may switch carriers frequently or those who prefer using multiple plans on a single device. It represents a significant advancement over traditional SIM cards by eliminating physical constraints and allowing for more efficient device management.

The other choices—such as switching between operating systems or enhancing performance through cloud services—do not relate to the primary function of eSIM technology, thus clarifying why they are not the correct answers. Additionally, while eSIMs enable connectivity, they do not inherently allow multiple devices to connect to a single account in the way described.