How to inquire about the telephone charges of maritime satellite phone with 0 10 card?

Call 0 10-62499989 and follow the voice prompts. Maritime telephone is too expensive, and there is a very good product called "Beidou Chat". After the mobile phone is connected to the device through Bluetooth, you can send short messages to your family and friends for free, and there is no monthly rent or traffic fee. It's cool. I recommend you to have a look. Hope to adopt, thank you!