I haven't sent an international short message, but there is an international point-to-point communication fee when checking the bill. Call 10086, and he said it might be iphone. ...

The mobile company promises that customers can inquire about the historical telephone charges of 12 months (excluding the current month), and no inquiry will be provided after the deadline. You can log in to China Mobile official website, and click "Telephone Fee Inquiry"-"Bill Inquiry" on the right to inquire about consumption. If you have any questions about the fee, you can contact the local manual customer service 10086 for verification.