Being a smartphone user can be tough, especially if you don't carry an extra charger around with you! The more your phone does, the more battery it seems to use.
A British magazine tested the batteries of several high-end smartphones to see which came out on top. Phones were tested for the amount of battery used during a call and during internet use.
Researchers noted that the Samsung Galazy S4 is a larger phone at five-inches than Apple's four-inch devices, which allows for a higher capacity battery.