Reduce your screen brightness. check the power usage, what is taking the most power? also, what phone did you use previously? If iPhone, then android is unlikely to beat iOS power efficiency...
I was using Nexus 4 before, and xiaomi note is a big improvement in term of battery usage.
All my friends using iPhone's always complain about poor battery life. And real life evidence is backed up by tests which shows that iPhones' battery life is reallyinferior to most Android flagships phones.
Rock steady: here is the 2014 flagship phone rank for best battery life
PHONEARENA FLAGSHIP BATTERY LIFE RANK FROM LONGEST TO SHORTEST BATTERY LIFE
We measure battery life by running a custom web-script, designed to replicate the power consumption of typical real-life usage.
NAME TIME (HIGHER IS BETTER)
SONY XPERIA Z3 COMPACT 10h 2 min (Excellent)
SONY XPERIA Z3 9h 29 min (Excellent)
HUAWEI ASCEND MATE7 9h 3 min (Excellent)
SONY XPERIA Z2 8h 10 min (Excellent)
SAMSUNG GALAXY S5 7h 38 min (Excellent)
HTC ONE (M8) 7h 12 min (Excellent)
LG G2 6h 48 min (Good)
HUAWEI ASCEND P7 6h 35 min (Good)
APPLE IPHONE 6 PLUS 6h 32 min (Good)
LG G3 6h 14 min (Good)
SAMSUNG GALAXY NOTE 3 6h 8 min (Good)
HTC ONE 5h 45 min (Good)
MOTOROLA MOTO X (2014) 5h 45 min (Good)
APPLE IPHONE 6 5h 22 min (Average)
APPLE IPHONE 5S 5h 2 min (Average)
SAMSUNG GALAXY S4 4h 59 min (Average)
SONY XPERIA Z1 4h 43 min (Average)
NOKIA LUMIA 930 4h 30 min (Average)