Macao telecom contract card expires.

First of all, what company's mobile phone card are you from in Macau?

One,

Hutchison Telecommunications, or "3"

With Hutchison Telecom's card, you can make calls, answer phones and receive short messages in mainland China, but you can't send short messages. Moreover, you need to dial something before making a phone call, which is very expensive, and you should choose China Mobile as the network.

Second,

CTM Macau Telecom

I'm not sure about that. There should be instructions when buying a card.

Third,

Little by little, intelligent tone

be the same as the above

Fourth,

China Unicom, now called China Telecom

Unicom has one card and two numbers. It is clear that it is not a single card with double numbers, but a card with double numbers. If this card is used in Chinese mainland, it will be charged according to Unicom's standards. This won't be very expensive. You use Unicom's number.