Why can't text messages be edited?

The main reason for this phenomenon is that the recipient is not added in the short message and the SIM card is not normal. Please investigate and handle according to the following methods:

The contact information of the recipient has not been added: Please add a contact before trying to send the message. When sending a short message, if the contact information of the recipient is not added, the send button is gray and the message cannot be sent.

There may be something wrong with the SIM card: On the status bar at the top of the phone, confirm whether the SIM card displays the signal status normally. If the signal is weak or there is no signal, it is recommended that you restart your phone after saving the message, and then try to send the message after the phone restarts. When the SIM card is abnormal, the short message sending button is gray, and information cannot be sent.

If the above methods fail to solve your problem, please back up your important data in advance and bring the purchase invoice to Huawei customer service center for testing and processing.