My mobile phone model is related to P700i. I send messages to others, and the messages received by others are all numbers made up of punctuation marks.

Hello, thank you for choosing Lenovo products.

I'm sorry for the inconvenience.

Your situation may be that you use your signature. I suggest you check whether information-settings-use signature is checked first. I suggest that you do not check it, and then check whether the problem exists.

If you use a third-party SMS software (including network SMS), it is not excluded to add this software. I suggest you check whether there are any relevant settings, especially the network short message, which may contain other information. It is recommended that you consult your service provider.

If you don't have a third-party SMS program installed, we suggest you try to restore the factory settings. You can find the corresponding options through system settings-backup and reset. Since restoring the factory settings will delete the original data information, it is recommended that you make a backup first. You can synchronize the data in the cloud through music synchronization, or you can back up the data on your computer through music assistant. For more details, please visit official website, Music Synchronization and Music Assistant.

If this problem still exists after recovery, it is not excluded that the SIM card operator has added relevant information. It is recommended that you consult the operator.

Thank you for your support to Lenovo and wish you a happy life!