Iphone hasn't issued a red exclamation point yet.

This situation means that the information transmission failed.

When you see a "undelivered" message with a red exclamation mark on the iPhone, it usually means that the message was not successfully sent to the recipient's mobile phone. This may be caused by a variety of reasons, such as network problems, weak signal, the receiver's mobile phone is down or turned off, and even the receiver's mobile phone number is wrong or stopped.

The red exclamation mark is a visual cue of sending failure, reminding the user that the information was not sent successfully. Users can check the network, send a signal or confirm the mobile phone status with the receiver according to the specific situation, so as to solve the problem and successfully send information.