Conversation so far:
what is the weight of an iphone 7
The mass of an iPhone 7 is 138 grams.
does the iphone 7 have a headphone jack
Changes introduced with the iPhone 7 included the removal of the 3.5 mm headphone jack.
what are the downsides of the removal of the 3.5 mm headphone jack from the iphone 7
Criticism of the iPhone 7 centered around the removal of the headphone jack, including the inability to use wired headphones with the included adapter and charge the device simultaneously.
why was the headphone jack removed from the iphone 7
Back in January 2016, a sound theory explained that Apple wanted to launch all-screen phones in the future. To do so, Apple needed to ditch the 3.5mm headphone jack.

Question: when was the phone discontinued
Self-contained rewrite: when was the iphone 7 discontinued