The iPhone 8 and iPhone 8 Plus are smartphones designed, developed, and marketed by Apple Inc. They make up the 11th generation of the iPhone. The iPhone 8 was released on September 22, 2017, succeeding the iPhone 7 and iPhone 7 Plus and preceding the iPhone X. The iPhone 8 and iPhone 8 Plus were discontinued by Apple on April 15, 2020 with the release of the second-generation iPhone SE.

Except for addition of a glass back, the designs of iPhone 8 and 8 Plus are largely similar to that of their predecessors. Notable changes include the removal of the rose gold and jet black color variants, addition of inductive charging, a faster processor, and improved cameras and displays. The iPhone 8 and 8 Plus share most of their internal hardware with the iPhone X.

Excerpt source – Wikipedia