Is there any function to judge whether the short message was sent successfully?

Yes, we have a short message receiving function. The short message receipt refers to the business that the customer receives the receipt message immediately after sending the short message with China Telecom's mobile phone. The contents of the receipt include the status information and additional information of whether the receiver successfully received it. The length of the additional information is limited to 44 characters (including punctuation marks), and the content involves cultural entertainment, life health, practical knowledge, hot events and other fields. For more service offers, click on "official website" Customer Service 2 18 below to answer your questions.