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The Galaxy S21 Ultra 5G was updated in May 2025.
Please ensure automatic updates are enabled.
You can enable automatic device updates by doing the following: Settings - About Phone - Software Update - Enable automatic updates so that any update will be received automatically.
If the problem persists, please visit the nearest service center for device diagnosis and troubleshooting.
You can send us your city and residential area so we can direct you to the nearest service center.
Or you can follow the link below to find the nearest center:
Please activate Maintenance Mode before taking your device to the service center.
To protect your personal data:
Maintenance Mode protects your privacy while someone else is using your phone, such as when you send it in for repair.
This feature prevents access to personal data on the device. In Maintenance Mode, your personal data, including photos, messages, and accounts, is inaccessible, and only pre-installed apps are available.
To activate Maintenance Mode:
First, you will need to unlock your phone to turn off Maintenance Mode. Second, go to Settings > Device Care > Maintenance Mode > Enable
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