The service is for unlock iPhone4, 4S, 5, 5C, 5S, 6, 6+, 6S, 6S+, SE, 7, 7+, 8, 8+, X, XS, XS Max, XR from the operator SoftBank Japan. IMEI, which are unlocked of this service are will be accept any SIM card in all countries except Japan. If your check result by IMEI there is a line: Next Tether Activation Policy Description: Japan SoftBank, you can use this service. Official unlock.
After unlocking, this line will change: Next Tether Policy Details: 2306 - Japan Softbank iPhone Blocked Policy
Unlock new models 6/6+/6S/6S+/SE/7/7+/8/8+/Х/XS/XS Max/ XR is more expensive. Look price in the drop-down selection list of models.
This service is only for unlocking from the operator SoftBank. If you order this service for unlocking from any other operator or if you choose the incorrect model - you will lose money for the wrong order.
In Japan, the unlocked phone will only work with an SoftBank SIM cards. On the territory of any other country the phone will accept any SIM card mobile operators.