How many kinds of Unicom GSM packages are there? How should I open it?

At present, Unicom packages have been roaming in China (excluding Hong Kong, Macao and Taiwan). There are also many kinds of packages, such as: traffic king package, ice cream package, internet package (such as king card, etc.) ). If you roam abroad, you can use your mobile phone card after opening the functions of international roaming and international long-distance calling, and the generated phone charges and traffic will be charged according to the international roaming fee. You can log in to China Unicom APP to learn more about Unicom packages and services according to your own consumption situation.