Okay, in Android platform development like involving customization like this can include basically adapting to OS like for different chipsets and basically we try to optimize the performance and ensuring that compatibility with various hardware is happening with components. Some key areas that I have focused in my work basically would be like the hardware abstraction layer which allows the Android to communicate with the underlying hardware and customizing these halls can ensure the Android properly is aligned with interfaces with any hardware components. Next one which I am aware is the kernel modification. The Android kernel which needs to be adapted to support any specific hardware and this might include adding any let us suppose drivers or new hardware components or optimizing the existing ones and then we have bootloader customization which can ensure bootloader is compatible with the hardware and can load the Android OS correctly which is very crucial. Then one more thing is about the system optimization that is customizing the Android system to optimize performance for suppose specific hardware configurations like CPU, GPU and memory optimization. Then we can also talk about device specific firmware that is for developing or customizing firmware or hardware components like any camera sensors or networking modules to ensure a full-fledged net functionality with Android. So these are some of the configurations that I have worked on and basically I have some knowledge on these aspects in my working domain till date.
