Used with a Rakuten Mobile SIM card. Currently configured to work with Rakuten Mobile, so you can use it simply by inserting your Rakuten Mobile SIM card after receiving the product. The image shows the device with a Rakuten Mobile SIM card inserted. Included items: Only those shown in the image (operation confirmed) Initial administrator username for the management screen: "admin" Password: "33573" (last five digits of IMEI) *Automatic update setting is turned off. *If you perform updates or a full reset, the supported bands will change, and it will no longer be usable with Rakuten Mobile. Please do this only if you have the necessary knowledge.