As a
refresher, the Android 4.3 update will bring faster performance and improved RAM management, new lockscreen, widgets, and camera features, updated Samsung
apps, new Samsung keyboard, KNOX functionality, and more.
As a
refresher, Lollipop brings a slew of enhancements to the table, including improved performance, a refreshed visual design in Samsung
apps and the general user interface, losckreen notifications, better battery life, multi user and guest mode support on phones, support for 64 - bit CPUs, and more.