Portable device and electronic settlement method

A mobile device which is capable of electronic payment with electronic payment terminals of stores, the mobile device comprising:

• a store information collection unit that records store information which identifies each of the stores when the electronic payment is executed;
• a maximum amount setting unit that sets a maximum of a usage amount in a preliminary payment for executing payment in the mobile device in a case where the electronic payment with the electronic payment terminal becomes impossible;
• a payment execution unit that receives payment information including the usage amount within the set maximum and the store information, and executes the preliminary payment;
• and
• a payment information transmission unit that transmits the payment information corresponding to the executed preliminary payment.