generally remains based on or Android 7.x (Nougat) in some regions. You can check for official updates through the following methods:
Thanks to the developer community on XDA, you can install (based on Android 8.1 Oreo) or even LineageOS 16/17 (Android 9/10) on the Oppo F3.
to check if any newer firmware (typically maintenance patches) is available for your region. Preparation
If you need modern app compatibility (many apps now require Android 8+), your best technical option is the custom ROM route. If that’s too complex, consider retiring the Oppo F3 as a secondary device and investing in a budget 5G phone that ships with Android 13 or 14.