The BlackBerry 9500, released in 2004, is widely considered to be the first commercially successful smartphone.

The first iPhone model, simply called "iPhone", was released in 2007.

The Samsung Galaxy Z Fold is a foldable smartphone released in 2019.

The Samsung Galaxy Note series, starting with the original Galaxy Note in 2011, popularized the use of a stylus pen on mobile devices.

The LG V50 ThinQ, released in 2019, features a dual-screen design with a secondary display that can be attached to the main screen.

The Samsung Galaxy Note, released in 2011, is often credited with introducing the concept of a "phablet", a device that combines the features of a smartphone and a tablet.

The Asus Zenfone 6, released in 2019, features a rotating camera system that allows the rear cameras to be used for both front and rear photography.

The Vivo X20 Plus UD, released in 2018, was the first mobile device to feature an under-display fingerprint sensor.

The Oppo Find X, released in 2018, features a pop-up selfie camera that rises out of the top of the device.

The iPhone X, released in 2017, introduced the concept of a "notch" display, a cutout at the top of the screen to accommodate the front-facing camera and sensors.

The Sharp Aquos Crystal, released in 2014, was one of the first mobile devices to feature a bezel-less design.

The Nokia N93, released in 2006, introduced the concept of a "slider" design, where the screen slides up to reveal a physical keyboard.

Google Project Ara was an ambitious project to create a modular smartphone, where users could swap out different modules to customize their device.

The Samsung Galaxy S6 Edge, released in 2015, introduced the concept of a "curved" display, where the edges of the screen curve around the sides of the device.

The Nokia 3310, released in 2000, was one of the first mobile devices to offer dual-SIM capabilities, allowing users to have two phone numbers on a single device.