China Mobile's mobile phone has been brought to Taiwan Province Province for international roaming. How to call the mainland to send a message? What number should I add?

Hello, if you are a Beijing mobile number, after roaming to Taiwan Province Province, the dialing method for dialing Chinese mainland is: +86 mobile number (or area code fixed telephone number). For example, the way to dial the mobile phone number is:+8613912345678; The area code of Beijing is (0 10). If the fixed telephone number is 12345678, the way to call the fixed telephone is +86 10 12345678. If you send a text message, just send it directly to the other party's number, without adding other numbers. Thank you for your support to China Mobile, and wish you a happy life!