As a rule of thumb: the bigger the phone, the stronger the battery. At least, this has been the case with the vast majority of jumbo-sized Android handsets.
And it's easy to see why: phones with larger displays need bigger enclosures that offer more space inside for internal components such as the battery.
Many pundits expect Apple's iPhone 6 to exhibit a notable battery capacity boost, but a new report is now alleging that both a 4.7 and 5.5-inch handset offer a slight boost in capacity from the battery used in the iPhone 5s, presumably because Apple is adamant to retain the World's Thinnest Smartphone crown...