Oppo sends a message, which always shows that it is being sent.

The mobile phone keeps showing that it is sending text messages, and the text messages can't be sent out. The possible reasons are communication failure or poor cell phone signal. Suggested solution:

1. It is recommended to go to Settings-Applications-All-SMS-Clear Data.

2. Restart the phone to see if there is a signal problem.

3. Check whether the number of the information center is correct: Information-Menu button in the lower left corner-Settings-Information Center. The number of centers in different operators and regions is different. Please contact the network operator for confirmation. The number of the information center must be preceded by "+".

4. Try to replace another SIM card.

5. It is recommended to try to upgrade the firmware. (Settings-About Equipment-System Update)

6. If you still can't send SMS through the above methods, please take the purchase invoice, maintenance card and machine to the after-sales center for testing.