Samsung began to distribute the Android 15 -based One UI 7 update for the Galaxy S21 series in 2021 before the calendar. Normally, this update, which is expected to be presented in May, was released in South Korea on 28 April 2025. The update is expected to reach other regions gradually.
Update Galaxy S21, S21+ and S21 ultra models are valid. The software package in South Korea is about 3.5 GB. The firmware version number appears to be G99xnksu8hyd9. Although the distribution for Türkiye has not yet begun, it is likely to come in the coming days.
Galaxy S21 user experience with One UI 7 changes for the last time
The Galaxy S21 family first met with users with Android 11. Since then, the devices have received Android 12, 13 and 14, respectively. Now the Android 15 -based One UI 7 was the last major operating system update that this series will receive. From now on, only security patches will be provided.
As of the first quarter of 2025, the Galaxy S21 series started to receive three -month security updates. This shows that Samsung gradually reduced support for these models. Therefore, one UI 7 will be the last comprehensive software innovation of these devices. It is an important update for those who still use their devices.
With one UI 7, various changes were made in the user interface. Fast settings and notification panel has become separate by default. There are also visual innovations in application symbols, folder structures and transition animations. Thanks to these arrangements, the interface generally gained a simpler appearance.
The artificial intelligence features called Galaxy AI were expanded with this version. Functions such as pouring voice notes into writing, advanced content summarizing and text suggestions stand out. However, it is not yet clear whether all of these features will be effective in every market. Usability in Türkiye may be due to operator and language support.
The update is currently available in South Korea. The spread to other countries is expected to be gradually. Users in Türkiye can also manually control the update from Settings> Software Update> Download and Install menu. It can take a few days for the software to reach our country.
With the update, the April 2025 security patch is included in the devices. This patch provides protection against critical security deficits. Although there is no significant difference in device performance, it is important for system stability. Therefore, the update is recommended.
Samsung also offers swap options for the transition to new models to Galaxy S21 owners. However, the fact that the Galaxy S21 series is no longer involved in the “Certified Re-New” program reduces swap values. However, when switching to new devices like Galaxy S25, it is still possible to get a discount with various campaigns. It should not be forgotten that these opportunities change according to countries.
For the Galaxy S21 users, one UI 7 is closing for a period. The devices will no longer receive big updates. But they will continue to be supported for a while with three -month security patches. In this series, which almost completed its technological life, the software journey officially ended.