The PIN only assign to one phone that you want to call UNLIMITED:

Please make sure that you are able to call to the countries listing on the website, once the pin is registered, no refund

Unlimited service is provided to individual user only, and assumes average individual usage patterns.

Cellular destinations are not included, with the exceptions of Canada, Singapore, Hong Kong, and China.

Toll free number is only used for activation. NOT a local access number.

No refund after activation.

By using this service, you accept the terms and conditions below. For domestic or international calls from the continental U.S. only. Service can't be used to place 700, 800, 900, or 978-numbers, operator-assisted, third party billed or collect calls. Not responsible for lost or stolen pins, activation codes or service. Due to the portable nature of the service, carrier reserves the right to block or terminate service without notice if carrier believes service is being used for fraudulent or illegal purposes. Carrier's liability for any claim or dispute or limited to the face value of the service. In no event will carrier be liable for any indirect, special, incidental, consequential, exemplary, or punitive damages of any kind. No dispute or claim may be brought as a class action and you may not act as a class representative or participate as a member of a class of claimant with respect to this service. Debuts will be submitted for final and binding arbitration service subject to change without notice.