Samsung‘s One UI 7 is currently in the beta testing phase. With the Galaxy S24 series and the Galaxy S21 FE benchmarked with Android 15 onboard, Samsung is making headway with the One UI 7 update for the second phone in Samsung's Galaxy S FE (Fan Edition) lineup. However, other Galaxy devices, including the Galaxy S21 FE, are also internally testing One UI 7 builds. Samsung Galaxy S21 FE appeared on Checkfirm with a One UI 7 build.

Samsung is actively developing One UI 7 for the Galaxy S21 FE, with both Exynos (G990EXXUCFXK3) and Snapdragon (G990B2XXUAHXL6) models spotted running test builds. This signals a wider rollout of One UI 7 to more Galaxy devices.

Samsung has confirmed that the update will not be released for any Galaxy smartphone until after the Galaxy S25 series launches in late January. Even after the S25 unveiling, the exact timing of the One UI 7 rollout for existing devices remains unclear.

Samsung Galaxy S21 FE is expected to receive the Android 15 update, but its release may not be simultaneous with the Galaxy S21, S21+, and S21 Ultra.

• Potential Delay: The S21 FE's Android 15 update could arrive a few weeks after the other S21 models, similar to the Android 14 rollout.
• Final Updates: Android 15 will be the last major Android OS update for the Galaxy S21, S21+, and S21 Ultra.
• Extended Support: The Galaxy S21 FE will receive Android 16, thanks to its later launch date and newer Android/One UI base.

The Galaxy S21 FE has surfaced on Geekbench, not only undergoing software testing but also flaunting its prowess with One UI 7 and Android 15. The device notched a single-core score of 1164 and a multi-core score of 3362, hinting at Samsung's dedication to boosting device speed and efficiency through its latest software innovations.