Samsung Galaxy S21 Ultra 5G Device Help & How-To Guides
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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.
ExploreChecking for and installing system updates
It's important to keep your device current with the latest features, security updates, and other critical fixes.
ExploreChanging 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.
ExploreActivating Wi-Fi calling
You can use Wi-Fi calling to make and receive calls in areas with limited or no cellular connectivity. If this option is not present on your device, or cannot be enabled, your carrier's network or your specific cellular plan might not support this feature.
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