How to open the international call function of mobile phone?

The method of opening the international long-distance function of the mobile phone number card is as follows:

1. If it is a mobile phone number,

You can also call the mobile customer service phone number 10086 to switch to manual service, and ask the customer service staff to help you open it;

In the city where the mobile phone number is used, you can also bring your ID card and mobile phone to the mobile business hall where the number belongs, explain the situation and ask the staff to help open it.

2. If it is Unicom card number,

You can call Unicom's customer service phone number 100 10 to transfer to manual service, and ask the customer service staff to help open it;

In the city where the mobile phone number is used, you can also bring your ID card and mobile phone to the Unicom business hall where the number belongs, explain the situation and ask the staff to help open it.

3. If it is a telecom number,

You can write short message "KTGJCT" or "3092" and send it to "1000 1" to open international long-distance service;

You can also call the telecom customer service phone number 10000 to switch to manual service, and ask the customer service staff to help you open it;

In the city where the mobile phone number is used, you can also bring your ID card and mobile phone to the telecom business hall where the number belongs, explain the situation and ask the staff to help open it.