Samsung is one of the most punctual companies in software updates 

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IMG: Samsung

Now the company is focussing on the Canadian market and rolling out the March 2023 security patch for some Galaxy devices, including Galaxy Z Fold 3, Galaxy Z Flip 3, and Galaxy S21 series devices

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IMG: Samsung

Users who own Galaxy Z Fold 3 devices can identify the update by its build number F926WVLS3FWC1

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IMG: Samsung

Galaxy Z Flip 3 Users can identify the update by its build number F711WVLS4FWC1

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IMG: Samsung

Canadian units of Galaxy S21, Galaxy S21+ and Galaxy S21 Ultra; users can easily identify the update by its firmware version numbers G991WVLS5EWC1, G996WVLS5EWC1 and G998WVLS5EWC1 respectively. 

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IMG: Samsung

The March 2023 security update includes several fixes that resolve security issues 

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IMG: Samsung

It also comes with some improvements that enhance the overall performance and stability of the device 

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IMG: Samsung

So it is highly recommended to install it whenever the update is available on your device.

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IMG: Samsung