If you currently own this phone, it is a reliable workhorse for media and long battery life. However, because it is stuck on an older version of Android, you may soon face app compatibility issues or miss out on critical security updates.
Keep using your A9 2020. It still has a great battery and reliable cameras. Disable auto-updates for the OS (keep security patches on). The phone is still perfectly functional for calls, social media, and YouTube. oppo a9 2020 coloros 12 update
For users requiring Android 12 or newer for specific apps (like banking apps that may eventually drop support for older OS versions), it may be time to consider newer models in the OPPO A-series or Reno series that launched with or are eligible for ColorOS 12 and beyond. If you currently own this phone, it is