A "Smartphone Series" refers to a collection of smartphones released by a specific manufacturer, often featuring similar design elements, specifications, and technology. These series typically include various models that cater to different user needs, such as budget-friendly options or high-end devices. Popular examples include the Apple iPhone series and the Samsung Galaxy series. Each smartphone in a series may offer unique features, such as camera capabilities, battery life, and processing power, while maintaining a consistent brand identity. Manufacturers often release new models annually, introducing improvements and innovations to keep up with market trends and consumer demands.