A system of this invention is directed to an information processing system that connects a mobile phone to an output device, and easily outputs data in a format processable by the output device. The information processing system includes a mobile phone, and a server. The mobile phone includes a determiner that, when an output device is connected via a communication interface, recognizes the output device and determines whether the mobile phone can output data in a format processable by the output device, a requester that, when the determiner determines that the mobile phone cannot output data processable by the output device, transmits a request to the server connected via a wireless communication network to supply the data in the format processable by the output device, a receiver that receives the data provided by the server, and a transmitter that transmits the data received by the receiver to the output device via the communication interface. The server transmits the data in the format processable by the output device to the mobile phone in response to the request from the requester.