For starters, even standard phone functions such as contacts, calls, and SMS are done through applications on Android devices, so even acquiring basic data requires analyzing an application. Secondly, a person's app usage can tell you a lot about them: where they've been (and when they were there), who they've communicated with, and even what they may be planning in the future.
Many phones come with more than 20 pre-installed applications. An examiner has no real way of knowing which of these apps could contain information useful for an investigation, and therefore they must all be analyzed. An examiner may be tempted to skip over certain apps that would appear to have little useful data, such as games. This would be a bad idea, though; many popular games have a built-in chat feature, which could yield useful information. Our analysis will focus...
