The dialed number is out of service, and he will not receive the message prompt later.

If the dialed number is not in the service area, the other party may receive relevant information prompts after a period of time.

Usually, when you try to call a phone that is out of service, the other party's mobile phone will not receive the relevant information prompt immediately. However, if the phone still cannot be connected after a certain period of time (for example, a few minutes or hours), an automatic callback or SMS notification function can be triggered to inform the caller that the phone cannot be connected.

In addition, if the other party has set up services such as call forwarding or voice mail, the caller may be prompted to send the message to these services so that the other party can receive the message and reply later.

In short, although you are not sure whether the other party will receive relevant information tips, you can try to contact the other party through other means, such as other phones, emails or social media.