How to send text messages to Vietnamese mobile phones via SKYPE in China?

You need to customize the SMS service first.

Step 1: Open your Skype client, select your friend who wants to send SMS, right-click your friend and select "Send SMS"; Skype can also find "Tools-> Send SMS".

Step 2: If your Skpye friend is associated with a mobile phone, his name will appear in the position of ①; If your Skype friend does not have an associated mobile phone, you can enter his mobile phone number at location ②, in the format:+8615999999; Click OK to send a message to your friend.