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Apple iPhone 15 vs. Samsung Galaxy S21 FE: A Comparison of Their Operating Systems

In the highly competitive smartphone market, the choice between devices often comes down to the underlying operating system. The Apple iPhone 15 and the Samsung Galaxy S21 FE represent two distinct ecosystems, each with its own strengths and features. In this comparison, we’ll explore the key differences between the operating systems powering these two smartphones to help you determine which one might be the better fit for your needs.

Apple iPhone 15: iOS 17

The Apple iPhone 15 runs on the latest version of iOS, the company’s proprietary mobile operating system. iOS 17 is known for its clean, intuitive, and user-friendly interface, offering a seamless and cohesive experience across all of Apple’s devices. One of the key advantages of iOS is its tight integration with Apple’s ecosystem, including features like iMessage, FaceTime, and the App Store. This integration allows for a highly streamlined and efficient user experience, particularly for those who are already invested in the Apple ecosystem. Additionally, iOS is renowned for its strong focus on security and privacy, with features like Face ID, App Tracking Transparency, and regular software updates that help protect user data.

Samsung Galaxy S21 FE: One UI 4.1 (based on Android 12)

The Samsung Galaxy S21 FE, on the other hand, runs on One UI 4.1, which is Samsung’s custom user interface built on top of the Android 12 operating system. One UI is known for its feature-rich and customizable nature, offering a wide range of options for users to personalize their device’s appearance and functionality. The interface also integrates well with Samsung’s ecosystem of devices and services, such as the Galaxy Wearable app and Samsung Pay. While One UI is based on the Android platform, it provides a unique user experience that differs from the stock Android interface. This can be both a pro and a con, depending on individual preferences and familiarity with the Android ecosystem.

User Experience and Ecosystem Integration

The choice between the iOS-powered iPhone 15 and the Android-based Samsung Galaxy S21 FE often comes down to personal preference and the user’s existing ecosystem. iOS is renowned for its seamless and intuitive user experience, making it a popular choice for those who value simplicity and ease of use. The tight integration with Apple’s ecosystem can also be a significant advantage for those who already own other Apple devices, such as Macs, iPads, or Apple Watches. On the other hand, the Android-based One UI on the Samsung Galaxy S21 FE offers a more customizable and feature-rich experience, appealing to users who prefer a higher degree of personalization and flexibility. The broader Android ecosystem also provides access to a wider range of apps and services, catering to a diverse set of user needs.


Both the Apple iPhone 15 and the Samsung Galaxy S21 FE offer excellent operating system experiences, catering to different user preferences and needs. The choice between the two will ultimately depend on factors such as your familiarity with the respective ecosystems, the importance you place on ecosystem integration, and your personal preferences for user interface and customization. Regardless of your choice, both the iOS-powered iPhone 15 and the Android-based Samsung Galaxy S21 FE are capable and reliable smartphones that can provide a satisfying user experience. The decision should be based on your individual needs and the features that are most important to you.