Android is a heavily fragmented platform. Nearly 1,300 manufacturers and over 24,000 device models introduce a huge degree of variance:
Hardware specifications demonstrate wild variations in screen size, resolution, and display ratio, CPU, SoC, and even architectures (ARMv7, ARMv8, and Intel's x86/x64 are among the most popular Android platforms). Android devices also vary in the version of the core OS and available API's. Compare this to Apple's iOS:
Android devices come with many different versions of Android and many different API levels that are available at any given time. For the purpose of mobile forensics, this means that one must either become familiar with the acquisition and protection specifics of all versions of Android or revert to using a dedicated Android acquisition product.
More information on Android fragmentation is available...