New leaked pics were published by Chinese-language sjbbs.zol.com.
The overall design seems very close to that of the iPhone 5. Apple could follow the same pattern as with the iPhone 4 and iPhone 4S.
At first glance, the battery seems smaller, but the iPhone keeps its own proportions.
According to the site, the leaks come from Foxconn, which has been manufacturing Apple-branded handsets for a few years now.
9to5Mac suggests the images could present an iPhone 5 clone rather than the iPhone 5S.
Two models of the iPhone may be ready for launch in 2013.
A report by Chinese media claimed that the iPhone 5S will be an upgraded version of the iPhone 5.