View attachment 91747
Definitely Android 4.3 , Baseband I337UCUEMJ9
Lookout Antivirus comes preloaded...still looking around though.
Best thing to come with Android 4.3 for me was the Notification Listener Service!
With it, Apps that listen for Notifications such as LightFlow, Floating Notifications, Dynamic Notifications, etc... no longer need to use the Accessibility Services "hack".
Additionally, the Notifications are connected so dismissing it one way dismisses it globally!
Previously, if you got a Google+ Notification that popped up in your Notification Shade swiping it away wouldn't dismiss it from Floating Notifications or LightFlow - you'd need to manually dismiss them from each. Now though, dismissing them by any means dismisses them from every App - super convenient!
Other than that, 4.3 changes the way files are stored so manually moving pictures around with a File Explorer App from folder-to-folder doesn't take as long to be reflected in the Gallery.