Is my phone acting as it should?

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http://forum.xda-developers.com – Hey guys, I have a couple of questions. 1) Is my RAM usage normal? It's always 80%+ occupied. (Please see the screenshot) 2) WiFi doesn't turn off during sleep although I have checked the option and there is no app forcing WiFi to stay awake. None that I know of except Viber that I have selected "Use device's sleep policy". Also I couldn't find any strings in build.prop that state something related to WiFi during sleep. 3) What is Google backup transport? 4) Why does it show two "Settings storage" apps? 5) Voice command "Go to ..." doesn't bypass my (HowTos)