The iPhone 5s is thin, at 7.6mm, but Apple has managed to make the iPhone 6 even slimmer, at just 6.9mm. The screen is now 4.7in compared with 4in, so that's made the iPhone 6 heavier than the iPhone 5s, at 129g compared with 112g.
That aforementioned 4.7in display offers the same 326ppi pixel density as the 4in display on the iPhone 5s, so Apple has added more pixels rather than simply stretching them to fill the bigger screen.
The iPhone 6 also has a higher contrast ratio, and dual-domain pixels that it says will help improve the viewing angles of the display.
The iPhone 6 has a new A8 processor that improves upon the already powerful A7 processor in the iPhone 5s.
