This is the future of smartphone .so many apps and functions are inbuilt in z3 .whereas in android there is no usable apps are inbuilt.
In z3 collage maker, anti virus, its keypad, private mode they are such apps are given by tizen .
There is no special appsdownloaded for these functions.
And the best thing in tizen.they used only 3 gb memory inbuilt.remaining 5 gb are usable for customers
Battery backup are very good .give full day performance in full charge battry with internet.
Screen quality shows its level.
Looking so much god then other devices .
Tizen is best
Love u samsung .
But need some more apps
Thanks for read this review