Android device compatibility with OS and Other

Android device compatibility

1. Android Device
Compatibility

2. Why is Android version compatibility essential for your device?
To receive the latest Android device updates, it must meet the specified
requirements of the corresponding Android OS framework versions.
Interoperability: It ensures that different components within the Android
ecosystem, such as hardware, software, and apps, can work seamlessly
together.
The Vendor Interface (VINTF) Object in the Android Open Source Project is a
key component that helps keep the Android OS and the device-specific
changes together so they can work properly.

3. How to align Android OS framework
with device-specific implementation?
Match device and framework
manifests and matrices for compatible
updates. Manifests describe what's
provided; matrices detail
requirements.

4. Device HAL version and Framework
manifest
The framework manifest describes high-level
services the framework can provide to the device.
Vendor has to implement HAL compatible to
Android OS framework version.
Example : To elevate your device to FCM level 4,
vendors are required to seamlessly integrate the
upgraded thermal HAL, transitioning from version
1.x to the all-new 2.0, as introduced in AOSP
version 10/Q.

5. How to update device manifest ?
Specify the desired FCM version by declaring it as the 'target-level' attribute in
the top-level <manifest> element in the device manifest.
Path of device manifest device/VENDOR/DEVICE/manifest.

6. To create a perfect match between a device manifest and a framework
compatibility matrix, ensure that manifest.target-level matches
compatibility-matrix.level precisely, or else, no match occurs.
The list of released FCM versions can be found under
hardware/interfaces/compatibility_matrices

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