Best phone under Rs. 30000

i need urgent advise regarding mobile phones.
i m 18 yrs old n will be joining college this year. so i am looking for a nice phone for my self. following are the required features-
RANGE-- up till 30000
GOOD DISPLAY
AN AMAZING CAMERA(both primary n secondary)
DESCENT BATTERY LIFE
N GOOD CUSTOMER SUPPORT SERVICE OF THAT BRAND IN INDIA

kindly advise me as to which all models would be the suitable for me.