Automatic roaming of Shenzhen Shenzhouxing listening music card. Why is there no signal when roaming to Hong Kong?

Hong Kong and the Mainland are two different regions in international telecommunications, which belong to international roaming.

Shenzhouxing can only roam on the mainland. . Going to Hong Kong is already "going abroad"

Global communication will not get a signal until Hong Kong, but the price is very expensive.

As for Shenzhouxing and M-Zone, there is no signal in Hong Kong, unless you ask the telecom company to help you open it, but the price is expensive and you have to pay a certain deposit.

If you suggest traveling to Hong Kong, you can buy a card directly in Hong Kong, which is cheap!