The One UI 5.1 update for the Galaxy Z Flip 4's carrier-unlocked version in the US comes with firmware version F721U1UEU1CWAC. The update also brings the February 2023 security patch that aims to fix dozens of security vulnerabilities found in Samsung smartphones. The new update is currently available on AT&T, Bluegrass Cellular, Cricket, C Spire, and Cellular South's networks in the country.
If you are a Galaxy Z Flip 4 user in the US with an unlocked device, you can download and install the One UI 5.1 update immediately by navigating to Settings » Software update and tapping Download and install. You can also download the new firmware file from our firmware database and flash it manually.
You can have a look at all the important features of Samsung's One UI 5.1 update in our detailed explainer video below.
[modelinfo model=”SM-F721U1″]
