Starting from tha features of samsung galaxy s4 i9500 it have super amoled display ( 441 ppi) which is realy very good and sharp and another plus point is camera it have 13 mp back camera with bsi sensor which help to take a cleare photos in low light condiction.
And 2 mp front camera which is very good in term of details and tha battery life is average its works 5-6 hour on heavy usage ( using 3G data and playing games watching videos) it have 35000 aprox score on antutu benchmark and now it is also available only 14-15 thousand on flipkart in short
Pros: - excellent camera Value to money Best display Sleek look and disining
Now come to problem, exynons 5410 octa core processor with 2 GB ram give good feed back but its heates lot much tha half uper part of screen become very hot and some times its lags also there is only one soluction is using custom rom, due to super amoled display the battrey life is average because its consumed lot of power the only soluction is put your screen brightness always low.
Cons: - over heating Average battery life Lagging some times.