The carrier-locked version of the Galaxy Z Flip is getting the new update with firmware version F700USQS4EUI1. It includes the September 2021 security patch that promises to fix more than 50 privacy and security-related vulnerabilities. The update might also have some device stability improvements, but don't expect any new features or design changes.
If you are a Galaxy Z Flip user on Sprint's network in the US, you can check for the update by navigating to Settings » Software update and tapping on Download and install. You can also download the latest firmware file from our firmware database and flash it manually. However, you would need a Windows computer to do that.
Samsung had launched the Galaxy Z Flip in the US in early 2020 with Android 10-based One UI 2. The foldable smartphone received the Android 11-based One UI 3 update earlier this year and the One UI 3.1.1 update a few weeks ago.
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