Just "upgraded" to latest 5 lollipop os system on my Samsung s4. I feel like I stepped back in time to 10 years ago! The interface is clunky, not user friendly, it defaults to white and gray backgrounds, sucks up a ton of battery and now all the interfaces allow is to access Google I have to hunt down my settings in 3 screens from apps window rather than main screen hot keys. I lost a ton of functionality. Very disappointing. If I can't uninstall I will be looking for more user friendly on-trend technology. Can I uninstall?