iFixit has started their iPhone SE teardown and so far, their ongoing teardown has revealed similar parts compared to the iPhone 5s.
The company notes other details, such as the lack of display adhesive in the iPhone SE, which makes it easier to pry apart. As for the display, it’s identical to the iPhone 5s and they have confirmed it would be possible to just plug and play replace a broken iPhone SE screen.
As for the battery, it is slightly larger at 1624 mAh capacity, versus the 1560 mAh of the iPhone 5s, or a 4% increase. The iPhone 6s, for comparison, has a 1715 mAh battery. Apple says the iPhone SE will offer 10 days of standby, 14 hours of talk time, and 13 hours of video playback.
As for the upgraded 12MP camera, it does not look like you’ll be able to use this with an iPhone 5s, as the connectors are different.
Yesterday Chipworks already made their way into the iPhone SE, which they revealed was a mashup of various iPhone 5s, iPhone 6 and iPhone 6s components.
…more to follow