Carrier-unlocked Samsung Galaxy S21 receives March 2023 security update

The carrier-unlocked models of Samsung Galaxy S21, Galaxy S21+, and Galaxy S21 Ultra have started to receive the latest March 2023 Android security patch update in the United States.

This update is live for almost all carrier networks including – Verizon, Comcast, US Cellular, T-Mobile, and others. You can verify it through the firmware version G991U1UES5EWB5, G996U1UES5EWB5, and G998U1UES5EWB5.

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Samsung March 2023 patch:

Samsung’s March 2023 patch comes with improvements for system security and stability as well as fixes general bugs and issues that affect users’ experience. The details further mention fixes for over five dozen privacy and security-related vulnerabilities and exposures.

This update addresses 5 Critical and 35 High levels of CVEs from Google’s Android operating system that could lead to remote code execution. In addition, it fixes 23 Samsung Vulnerabilities and Exposures to further boost the One UI functionality and users’ experience.

Moreover, Samsung’s March 2023 patch details reveal a fix for Galaxy S21-specific vulnerability – “SVE-2022-0604(CVE-2023-21459)”. It was allowing attackers to cause memory access faults on smartphones.

Aside from these, the Samsung Galaxy S21 March 2023 update for carrier-unlocked models doesn’t bring anything noteworthy, as per the changelog. However, you might notice fixes for the problems and errors you faced after installing the last software update which is One UI 5.1.

Have you noticed battery performance improvements?

Galaxy S21 series customers have been reporting battery drain and overheating issues for a long time. Users were expecting it to be fixed with the major One UI 5.1 update but unfortunately, it didn’t happen.

However, the Galaxy S21 March 2023 patch solved battery-related problems for many consumers. They say that the device is giving better battery performance than earlier. Have you noticed any battery performance improvements on your S21? You can share with us through Twitter.