The Oppo A5i Pro and Tecno Spark 40C both run Android-based operating systems, with the Oppo using Android 16 and the Tecno running Android 15. Both devices share several common features, including clipboard warnings, location and camera/microphone privacy options, theme customization, app tracking blocking, on-device machine learning, media picker, dark mode, and Wi-Fi password sharing (although neither supports Wi-Fi password sharing). Both also support playing games while downloading, battery health checks, extra dim modes, dynamic theming, offloading apps, customizable notifications, Live Text, full-page screenshots, split-screen, PiP, sharing intents, child locks, widgets, offline voice recognition, voice commands, and multi-user systems.
Some features are identical across both devices, such as the lack of Mail Privacy Protection, focus modes, Quick Start, and the ability to be used as a PC. Both phones also lack direct OS updates. However, the Oppo A5i Pro offers a feature called TrustZone for extra security, which is not mentioned for the Tecno Spark 40C. Additionally, the Oppo has a slightly more recent Android version (Android 16), while the Tecno is on Android 15.
In summary, both phones share many key features, including strong privacy options and useful UI customizations. However, the Oppo A5i Pro stands out with its more recent Android version, while the Tecno Spark 40C offers a similar feature set overall, with no major differences in core functionality.