"Nokia Energy Profiler is a stand-alone test and measurement application for Nokia S60 3rd Edition, Feature Pack 1 devices (and onwards). The application allows developers to test and monitor their application’s energy usage in real time in the target device.
The application is available as a SIS package for for Nokia S60 3rd Edition devices, but measurement works only in 3rd Edition, Feature Pack 1 (or newer). Older devices can still view files."
