BlackBerry, formerly known as Research In Motion (RIM), introduced the first commercially successful smartphone, the BlackBerry 9500, in 1999.

Steve Jobs, along with Steve Wozniak, founded Apple Inc. in 1976.

Samsung Electronics, a South Korean multinational conglomerate, is the manufacturer of the popular Galaxy series of smartphones and tablets.

iOS is the operating system developed and used by Apple Inc. for its mobile devices, including the iPhone, iPad, and iPod Touch.

Huawei Technologies Co., Ltd., a Chinese multinational technology company, is the world's largest smartphone manufacturer by volume.

Android is a mobile operating system developed by Google, based on the Linux kernel and designed primarily for touchscreen mobile devices such as smartphones and tablets.

Microsoft developed the Windows Phone operating system and was associated with the Lumia series of smartphones.

BlackBerry OS, formerly known as BlackBerry 10, is the operating system developed by BlackBerry Limited for its BlackBerry devices.

Samsung is known for its foldable smartphones, such as the Galaxy Z Fold and Galaxy Z Flip.

Fire OS is the mobile operating system developed by Amazon, based on Android and used on its Fire tablets and Fire TV devices.

Google is known for its Pixel series of smartphones and the development of the Android operating system.

HarmonyOS is the mobile operating system developed by Huawei, designed to replace Android on its devices.

OnePlus is known for its OnePlus series of smartphones, which emphasize performance and affordability.

Sailfish OS is the mobile operating system developed by Jolla, a Finnish company, known for its gesture-based user interface.

Kyocera is known for its rugged and durable smartphones, such as the Kyocera DuraForce series.