Samsung Galaxy S21 Ultra 5G Device Help & How-To Guides
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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.
ExploreSetting 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.
ExploreChecking for and installing system updates
It's important to keep your device current with the latest features, security updates, and other critical fixes.
ExploreResetting all settings
A common troubleshooting step is resetting all of your apps to their factory defaults if you are having trouble with your device; your personal information will not be deleted.
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