Samsung Galaxy S21 8GB /128GB ROM Duos with eSIM 

1. Dual SIM functionality: With eSIM support, you can have two phone numbers on one device, allowing you to efficiently manage personal and work contacts without carrying two phones.
2. Flexibility: eSIM enables you to switch between carriers and plans without needing to physically swap SIM cards. This is particularly useful when traveling internationally or when you want to change your carrier for better rates or coverage.
3. Save space: With eSIM, you don’t need to use a physical SIM card slot, which means more space for other components or a sleeker design.
4. Backup: In case your primary SIM card fails or gets damaged, you can still use your phone with the eSIM, ensuring you stay connected.
5. Convenience: Activating a new cellular plan with eSIM is often quicker and easier than dealing with physical SIM cards. You can typically activate an eSIM through a QR code or directly from your carrier’s app.
6. Security: eSIM technology often comes with enhanced security features, such as remote provisioning and the ability to lock or wipe the eSIM remotely in case of theft or loss.
7. Future-proofing: As more carriers and manufacturers adopt eSIM technology, having a device that supports it ensures compatibility with future advancements in mobile technology.

Overall, using the Samsung Galaxy S21 with eSIM support provides greater flexibility, convenience, and efficiency in managing your cellular connectivity.