Hello. I have an 5s, which battery drains quite fast. I normally use Battery Doctor to find out which app uses too much power, but some apps give a "Not Returned" signal/name and the Activity Monitor like apps only list the running processes, but only sorted by PID and not CPU. Is there a definite app for iOS or OS X to find out CPU usage by process name, as even the Settings app cannot help? I attach a combined screenshot of the information I have. Settings says Solitaire uses a lot of battery, but Battery Doctor shows the name and to verify I just uninstalled it from my phone. Closing all apps via the Switcher does not work, and even a restart after that brings back that Not Returned process. And Safari does not scroll down when entering text below the visible text entry field on this forum. Thanks for any pointers.