Step 1 : Introduction to the question"which company launched first touch screen mobile"
A smartphone is a mobile personal computer with an advanced mobile operating system with features useful for mobile or handheld use. Smartphones, which are typically pocket-sized (as opposed to tablets, which are much larger in measurement), have the ability to place and receive voice/video calls and create and receive text messages, have personal digital assistants (such as Siri, Google Assistant, Alexa, or Cortana), an event calendar, a media player, video games, GPS navigation, digital camera and digital video camera. Smartphones can access the Internet through cellular or Wi-Fi and can run a variety of third-party software components ("apps" from places like Google Play Store or Apple App Store)-Wikipedia
