How to solve the problem that iPhone SMS shows that it has not been delivered yet?

Iphone SMS was not delivered, indicating that the SMS was sent failed. The reasons for the failure of sending short messages mainly include the following aspects:

1, the phone bill is insufficient.

When the cost of our mobile phone is insufficient, we can keep the function of answering calls for one day, but from the moment we stop, our mobile phone can no longer send short messages, even to 10086 or 10000. At this time, if you want to send a text message, you can only charge the phone bill, and you must make up all the missing fees before you can send a text message with your mobile phone.

2. The cell phone signal is not good

The usage status of our mobile phone is related to the signal of the mobile phone. The stronger the cell phone signal (Apple's five-cell phone signal is the strongest), the smoother the cell phone will be used, especially when making calls, texting or surfing the Internet. If there is something wrong with the cell phone signal, you can send a text message somewhere else, or wait for a while and then send a text message when the signal is good.

3. The other party blacklists you.

If you are blacklisted by the other party, then the message will not be sent. In this case, only when the other party removes you from the blacklist can you successfully send SMS. But, of course, even if it is dark, you can send a text message to the other party's mobile phone. If a short message is sent, the other party's mobile phone system will prompt that there is an intercepted short message, and the other party can choose to read or delete it.

4. The other party has set the flight mode or turned it off.

If the other party's mobile phone is in flight mode or turned off, if you send a message to the other party, the message will not be delivered. If the other party is turned on, your Apple phone will immediately inform you that the other party has received the message.