Also so can purcahse at http://www.yokososim.com/ *If you cannot use the purchased card, please inform us. we investigate a reason and if fault is on our side, we would like to refund you immediate. The problem is due to phone settings. Anyway, please feel free to contact me or call to technical support in Japan at +81 3 6667 4382 (weekdays: 10:00-17:00).
Yokoso SIM Advantages Not like Wifi Rental or Telco Roaming, It is;
Reasonable
Portable
No need to return
No extra charges
Can share among your friend (hotspot or tethering)