This practical guide provides you with a quick and easy introduction to the Galaxy S25, S25+, and S25 Ultra. Thanks to the logically structured chapters, you can make optimal use of your smartphone in both everyday life and work in no time. From the initial setup to using various applications, each step is clearly explained with intuitive screenshots. The author places special emphasis on clear language, making it easy for beginners to follow along. Since the chapters are self-contained, you can specifically look up the topics that interest you without having to go through the entire book. With its clear chapter structure and detailed index, this practical guide is suitable not only for beginners but also for experienced users who want to look up specific functions. The topics covered in the guide include: the setup assistant, customizing the user interface, creating and managing a Google account, phone interface and contacts, SMS with the messaging app, setting up Wi-Fi and mobile internet, email and web browser, setting up and using WhatsApp, camera and photo viewer, voice control with Google Gemini, AI features for text and image editing, apps from the Google Play Store, device lock and theft protection, maps and navigation with Google Maps, Bluetooth and NFC, tips & tricks, input methods, and using the S Pen of the Galaxy S25 Ultra.