Can Shandong Mobile Sub-card roam?

If you are talking about the 4G national package daughter card, the 4G national package daughter card can open international business. When the secondary card has the qualification of international business exemption, it can be opened without pre-storage; If the secondary card has opened international business before joining the primary and secondary cards, it will be opened by default. Pre-paid users do not need to apply, and international roaming services in Hong Kong, Macao, Taiwan, Malaysia, South Korea, Vietnam and other regions and countries are opened by default. Post-paid users can log in to the online business hall > click on "Business Handling" > "International Business" > "International Roaming in Taiwan, Hong Kong and Macao", enable or cancel the international roaming rights, and choose to order the superimposed package. Post-paid users in some areas can only start international roaming service if they are online normally and the available ordinary deposit is greater than that in 500 yuan (due to different policies in different cities, the specific discount is subject to local policies). It is recommended to contact local manual customer service to find out.