Can I detect if a program uses phone resources excessively?
Yes, the CPU indicator of the Status icon can pin-point applications that use the CPU exhaustively. Such programs can cause an increase in battery consumption. To estimate CPU usage, bring the application to be tested to foreground and observe the levels shown on the CPU indicator. For comparison, also observe the CPU usage for the idle screen and for CPU-intensive tasks, like displaying an animated .gif image or a video.