subject: Cell Phones, the history and culture [print this page] With high levels of mobile telephone penetration, a mobile culture has evolved, where the phone becomes a key social tool, and people rely on their mobile phone address book to keep in touch with their friends. Many people keep in touch using SMS, and a entirely culture of "texting" has developed from this. The commercial market in SMS's is raising. Many phones even offer Instant Messenger services to increase the simplicity and ease of texting on phones.