A purported sketch of the iPhone 7 obtained by French website NWE points towards the next-generation smartphone having the same length and width as the iPhone 6s.

The unverified drawing shows the iPhone 7 has the same 138.3mm (5.44 inches) length and 6.71mm (2.64 inches) width as the iPhone 6s, but the depth of the new smartphone is not listed for comparison.

The sketch also depicts a larger and slightly convex camera housing, suggesting that the iPhone 7 could possibly have a larger sensor and a nearly flush camera cutout.

Conflicting rumors suggest that the iPhone 7 series may or may not include a 3.5mm headphone jack, Smart Connector, and dual-lens camera system, while it is possible some of those features may be exclusive to the larger iPhone 7 Plus (or Pro?)

The sketch is consistent with a previous iPhone 7 Plus design drawing that showed the larger 5.5-inch smartphone will likewise have identical dimensions as the iPhone 6s Plus.

Apple is expected to announce the iPhone 7 and iPhone 7 Plus in September. KGI Securities analyst Ming-Chi Kuo believes the smartphones will not have "many attractive selling points," and it appears increasingly likely that Apple will break away from its typical tick-tock "S" design cycle and maintain the same 6-series form factor for a third consecutive year.

Other rumored features for the iPhone 7 series include a touch-sensitive home button, waterproofing and dustproofing, repositioned antenna bands, stereo speakers, wireless charging, and a slightly larger battery. Apple may reserve some features for the following iPhone in 2017, which rumors suggest could be far more compelling with an all-new OLED display, glass casing, and several other changes.