After several Galaxy S series smartphones, Samsung has finally started rolling out the One UI 7 update based on Android 15 for the Galaxy S21 series. This major update makes this series phones more useful, smarter, and secure. Samsung Galaxy S21, Galaxy S21 Plus, and Galaxy S21 Ultra smartphones are getting the One UI 7 … Continue reading Surprise! Samsung Galaxy S21 starts receiving One UI 7 (Android 15) update