An extract on #iphone7plus
The iPhone 7's overall design is similar to the iPhone 6S, but introduces new color options, water and dust resistance, a new capacitive, static home button, and removes the 3.5 mm headphone jack. The device's internal hardware also received upgrades, including a heterogeneous quad-core system-on-chip with improved system and graphics performance, and upgraded 12 megapixel rear-facing cameras with optical image stabilization on all models and an additional telephoto lens on the iPhone 7 Plus model to provide enhanced zoom capabilities.
Reception of the iPhone 7 was mixed. Although reviewers noted the improvements to the camera, especially the dual rear camera on the Plus model, they also stated that the iPhone 7 did not make significant changes to the display or build quality, where competing flagship smartphones surpassed the quality of the iPhone 7. Many reviews highlighted the controversial removal of the 3.5 mm headphone jack; some critics argued that the change was meant to bolster licensing of the proprietary Lightning connector and the sales of Apple's own wireless headphone products, and questioned the effects of the change on audio quality. Apple was also mocked by critics for its statement that the change required "courage".
The iPhone 7 has been the subject of several reported issues, most notably a hissing noise during heavy usage of the phones and significant differences in performance between device variants. Apple has not released sales numbers for iPhone 7, but multiple U.S. carriers reported that it was in high demand on launch. Subsequent reports at the end of 2016 stated that Apple had reduced production of the models due to "sluggish" sales and decreasing demand, though sales research after the first quarter of 2017 placed the devices as the best-selling smartphones in the world.
Prior to its official announcement, multiple aspects of the iPhone 7 were heavily rumored. Apple's plans to remove the 3.5 mm headphone jack received significant media attention. Other rumors included a flush camera, stereo speakers, a thinner Lightning port, a 256 gigabyte storage option, and a larger 3,100 mAh battery.
On August 29, 2016, invitations to a press event at the Bill Graham Civic Auditorium in San Francisco, California on September 7, 2016 were sent out to members of the media, prompting immediate speculation of the iPhone 7's upcoming announcement. The iPhone 7 was officially announced at that event, with pre-orders beginning September 9, and general availability on September 16.
iPhone 7 launched in 30 new countries later in September, with further international rollouts throughout October and November 2016. Indonesia was the last country to release the iPhone 7 and 7 Plus, with availability starting on March 31, 2017, following Apple's research and development investment in the country.
On March 21, 2017, Apple announced an iPhone 7 with a red color finish (and white front), as part of its partnership with (PRODUCT)RED to highlight its AIDS fundraising campaign. It launched on March 24, 2017.