There’s a reason Android phones are called smartphones: They are phones with smarts. Such intelligence comes at a price, however. These phones need more processing muscle, and, just like the human body, the more muscle you have, the more energy you’ll need.
The Samsung Galaxy S3 GT-I9300, for instance, needs a lot of power for its quad-core 1.4 GHz Cortex-A9 CPU, its Mali-400MP GPU, and its bright and vibrant HD Super AMOLED touchscreen. For most people and provided it is used intelligently, the Galaxy S3’s 2,100-mAh Li-ion battery suffices for several hours of casual to moderate use in a day.
For heavy and hard-core users, however, that [...]