The iPhone 11 Pro and iPhone 11 Pro Max are smartphones designed, developed and marketed by Apple Inc. They are the 13th-generation flagship iPhones, succeeding the iPhone XS and iPhone XS Max, respectively. Apple CEO Tim Cook unveiled the devices alongside a lower-end model, the iPhone 11, on September 10, 2019, at the Steve Jobs Theater at Apple Park. Pre-orders began on September 13, 2019, and the phones went on sale on September 20. They were discontinued on October 13, 2020, following the announcement of iPhone 12 Pro and iPhone 12 Pro Max.

Key upgrades over the previous devices include the triple-lens rear camera system and the A13 Bionic chip. The 11 Pro is Apple’s first iPhone to feature a “pro” designation, which was previously used only for larger Apple devices, such as the iPad Pro and MacBook Pro, and the only to include an 18W fast charger and a Lightning to USB-C cable that allows connection to the charger and to current Mac computers, in the box
Excerpt source – Wikipedia