The first-month fee goes for the “monthly basic charges” of data transmission on the month you start the contract. The monthly basic fee includes mandatory charges for data transmission and other underlying fees (SMS Basic fee, Voice Call Basic fee).
|Monthly basic fee
|JP SMART DATA 6GB (Data only option)||
|(not available)||2930 yen|
|JP SMART DATA 6GB (050 Voice Call plan)||2780 yen||150 yen||300 yen||3230 yen|
The monthly basic fee is the fixed amount that charges you each month for activating sim card service. Besides, you will have to pay for your usage fee if any.