This one is best mobile phone till a year back.
It has 1 Gb of ram plenty enough for one with moderate use,
Its one of rare phone of its time with HD resolution display with 5 screen.
Ram management good enough to install many apps and multi tasking easily. Expandable memory up to 32 GB give you enough space ro stoe lot many movies, music, photos etc.
Its battery of 2500 mah gives day long power and lasts really long. No need to replace the battery even after 1.5 years of use.