We found an intriguing infographic that will offer some "bragging rights" to Samsung Galaxy S4 owners. It also shows that owning the device affords them the opportunity to do more with their device. The infographic above comes from a series of battery life tests in which the Samsung Galaxy S4 beat out all the other devices which were tested. This included the iPhone 5, the HTC One, the Sony Xperia Z, the Google Nexus 4 and a few others.

As you can see from the pic, the SGS4 offers better call time battery life and better internet battery use than any of the other devices tested. The folks at "Which! Tech Daily" used their own testing process detailed below,

We test battery life using our own phone network simulator so that we can be certain that the signal strength is the same every time. Signal strength affects battery life as phones have to work harder when there’s poor reception.

We also set the screen brightness on every phone to the same level; this is a readable level rather than the maximum so that we don’t penalise phones with brighter displays. Finally, we condition each phone’s battery before testing by fully charging it and then discharging it.

We then make a continuous call (for the call time test) and access a regularly updating special web page over 3G (to test web browsing).

Battery life in everyday usage will vary from person to person as everyone uses their phone differently. That said, these tests are an extremely useful representation of battery performance and are comparable from one device to another.
This seems like a decent "real world" way to test these devices, but of course as they point out, your results may vary. Sound off if you have been impressed with the battery life on your SGS4.

Thanks for the tip, wicked!

Source: Samsung's Galaxy S4 scoops the iPhone 5 on battery life