Samsung Galaxy S21 Ultra 5G Device Help & How-To Guides

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Galaxy S21 Ultra 5G

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Accessing Mobile Network Settings

When traveling internationally, your device settings may require an update to conserve data and minimize unwanted fees. Learn how to change roaming settings on your device ahead of your next international trip, including how to enable and disable roaming. Also learn how to view the status of your Wi-Fi Pod's Internet connection.
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Setting up your second cellular plan with eSIM

Adding a secondary eSIM alongside a physical SIM or eSIM allows you to quickly switch between two cellular plans and/or carriers for voice or data.
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Setting up an eSIM with a push notification

This tutorial walks you through the process of setting up an eSIM on your device using a push notification sent by your carrier. This guide shows you how to accept the notification, download the eSIM profile, and activate your mobile service quickly and securely—without scanning a QR code or manually entering details.
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Changing Roaming Settings for a Trip

When traveling internationally, you may want to turn data roaming on and off to conserve data and minimize unwanted fees.
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Common issues and fixes