| 摘要 |
The present invention relates to a system for advertising and charging a smart phone by using a public phone at a public phone booth. More particularly, the present invention relates to technology for providing smart phone charge for free by advertisement exposure or using a public phone at a public phone booth. The present invention relates to the system for advertising and charging a smart phone using a public phone at a public phone booth to contribute to new profit. According to the present invention, when sensing a call or watching an advertisement, the smart phone can be charged for free. So, user convenience is improved by the combination of the public phone and the smart phone charge system. Also, from the point of view of an operator, the use of the public phone can be promoted and making new profit by an advertisement can be expected. |
