Send text messages to friends in Canada ...

None of the answers upstairs are correct.

She sent it to you and you received it for free. She paid for international roaming SMS, which is estimated to be higher than Canadian 1.5 yuan/.

If sent to her, the standard is 0. 15 yuan/article, just like when she was in China. If you have a Unicom package, charge according to the Unicom package. But she has to pay the international roaming fee to receive it.

Pay attention to a rule that the cost of sending and receiving text messages will not depend on where the other party roams or not.

There is also a rule that the cost of making and answering calls will not be determined according to whether the other party is roaming or not. The call fee between you and her is the standard for calling her at your location (for example, you are local, for example, you are roaming domestically, for example, you are roaming internationally) (no matter where she is).

You may not understand what I just said. In fact, to put it bluntly, if you send her a short message about international roaming, you have to pay a lot of money according to what she said upstairs. Isn't China Mobile going to tell China Unicom her number about international roaming? Does it mean that China Unicom can easily know which big mobile customers want frequent international roaming? It's not like waiting for Unicom to grab it. Big mobile customers.