The mobile phone has become an important part of our everyday life. We can’t imagine our lives without it now. Thanks to the mobile phone we can keep in contact with our relatives and friends at any time. We use them to text and to send emails, to share photos and videos. We can use the Internet and listen to music and do lots of other things. However, according to surveys, mobile phone users mostly spend their time on games and social networking. Around 80 percent of the world’s population has a mobile phone. The mobile phone industry is the fastest growing industry in the world. From 1983 to 2016, worldwide mobile phone subscriptions grew to over 7 billion.