Mobile terminal capable of instructing transmission of fax, image forming apparatus, methods of controlling mobile terminal and image forming apparatus, communication system, and storage medium for prompting an original setting instruction display

A mobile terminal that is capable of communicating with an image forming apparatus, comprising:

• a transmission destination-setting unit configured to set transmission destination information indicative of a transmission destination to which a fax document is to be transmitted;
• a reading and transmission-setting unit configured to set reading and transmission information concerning fax transmission and reading of an original to be transmitted by fax;
• a request transmission unit configured to transmit a request for transmitting the fax document, to the image forming apparatus;
• an original setting instruction-displaying unit configured to display, on a display section, a message for prompting a user to set the original on the image forming apparatus when a response notifying that the image forming apparatus is capable of transmitting a fax document is received from the image forming apparatus to which the request has been transmitted by said request transmission unit;
• an instruction transmission unit configured to transmit, when it is detected that the original has been set on the image forming apparatus, and an instruction for transmitting the fax document is received from the user, an instruction for reading the original and transmitting the fax document, together with the transmission destination information set by said transmission destination-setting unit, and the reading and transmission information set by said reading and transmission-setting unit, to the image forming apparatus;
• and
• a transmission result-displaying unit configured to display a result of transmission of the fax document by the image forming apparatus, which is instructed by said instruction transmission unit, on the display section.