2. The Samsung 7872 SoC is limited to Android 7 support. This is a result of Google's Play Services policy, and would require Samsung to update their SoC support for the latest Android versions. To date Samsung has shown no inclination to update their now 3-year-old SoC, and likely never will.
This is not a result of Google's policy !
It's Samsung's policy not to update the 7872 SDK to Android 9 or above.
M11 and Google Play Store
Dear friend,
In Android 7.0 or newer Android version, the Google play service is only supported after passing the GMS certification. Currently, Google has closed the channel of GMS certification for version before Android 9.0.
Since any development for the M11 should be based on the SoC used--Samsung 7872 and its Software Development Kit (SDK). But unfortunately, the supplier can only provide it in Android 7.0. So we can’t find a solution to upgrade to higher version while bypassing the provided SDK. Hope you can kindly understand.
Best regards