As the convenience, the mobile phones became the most important connect tool in our daily life, especially after the smart mobile phone was invented. You can call someone, send message, listen music, read e-books, take photos, browse the internet, stock docs, receive and send mails, deal with the work docs, watching movies by your smart phones. Most people can leave the mobile now. They take it anywhere and anytime. Now the question is how many mobile phones do you have? Do they full your daily need?