Why is my mobile phone suddenly unable to send text messages?

If you are using a Huawei mobile phone, you can do it in the following ways:

1. "Enhanced information" cannot be sent

If "Enhanced information" is displayed in the short message editing box, it means that the mobile phone is sending short messages with enhanced information, which can be handled in the following ways:

1. Please turn off and turn on the enhanced information switch again (SMS > Three point buttons > Settings > Enhanced information).

2. If you need to contact the other party urgently, I suggest you turn off the enhanced information function first and send the information by ordinary SMS, so that you can contact the other party in time.

3. If you sent the enhanced information, the other party could not receive it. Perhaps your message or number may be controlled by the operator's security policy, and the operator did not send it to the receiving end after receiving the message. For details, please call the operator's customer service to confirm the cause of the problem.

4. If it is still unresolved, it is recommended that you consult the operator.

2. Some short messages cannot be sent

For example, sending short messages to operators (China Mobile 186, China Telecom 1, China Unicom 11) means that some short messages cannot be sent on the mobile phone.

1. If the short message contains sensitive words, the other party can't receive it after sending it

Please use test sentences to send the short message to confirm whether it can be received normally, such as sending hello, thank you, goodbye and so on. If it can be received normally, it means that the short message you sent before may contain sensitive words, so I suggest you avoid sending sensitive words.

2. Please confirm whether the fixed dialing service has been started.

After fixed dialing is started, you can only send information to the contacts in the fixed dialing list, but not to other numbers. If you want to continue sending, please cancel the fixed dialing service.

you can enter dial/phone > Three point buttons > Settings > More below card 1 or card 2 >: Fixed dialing > Turn off fixed dialing (you need to consult the operator for the PIN2 code needed during the turn-off process).

3. If you are sending short messages in groups, please confirm whether the screen is turned off during sending. It is suggested that you keep the screen of your mobile phone on or keep it charged when sending short messages in groups.

4. If you can't send a short message to a short number (e.g. 166), please go to Settings, search for paid SMS permission, click Enter to find information, and suggest setting it as inquiry.

3. All short messages can't be sent

1. If your mobile phone is currently using the 5G network, I suggest you pull down the shortcut switch panel and turn off the 5G switch before trying.

2. There may be compatibility problems with third-party SMS. Please check whether you have used the third-party SMS application. Check method: Please enter Settings, search to enter the default application, and check whether the selected application in the information is a three-party SMS application. If so, please set the system default information as the system default.

3. You can switch the flight mode, restart the network and try again.

4. If the SIM card is currently enabled with VoLTE, please enter the settings, search for VoLTE, turn off the VoLTE HD call switch and try again; If you don't find the VoLTE switch or the problem is not solved after turning on the VoLTE switch again, it is suggested that you contact the operator to turn on the VoLTE function again first, and then restart your mobile phone to try.

5. If a "red exclamation mark" appears directly when sending a short message, please press and hold the message that failed to send, and select more > Check the information details, contact the operator and feedback the error code.

6. Please check whether the number of the short message center is set normally:

(1) Please click in the message > Three point buttons > Settings > Advanced > Set the correct SMS center number in the SMS center (telecom card has no SMS center). If you don't know the SMS center number, please contact the operator to get the SMS center number and set it.

(2) If the confirmation number is correct, but the setting fails, it is recommended that you set the SIM card on another mobile phone. If the setting still fails, it may be a SIM card problem. It is recommended that you bring your valid certificate to the operator's business hall to replace the SIM card.

7. Please plug the SIM card into another mobile phone for troubleshooting. If other mobile phones can't send it, I suggest you consult the operator.

4. If the above troubleshooting fails to solve your problem, it is recommended that you clean and restore the data

1. Restore the "information" to the default setting

EMUI 4.X: information > Menu > Settings > Restore the default settings.

EMUI 5.X/8.X: information >; More > Settings > Restore the default settings.

EMUI 9.X/1.X/11.X & Magic UI 2.X/3.X/4.: information >; Three point buttons > Settings > Three point buttons, select the below to restore the default settings.

HarmonyOS: information > Four point buttons > Settings > Four point buttons, select the below to restore the default settings.

2. Delete the data and cache of information (SMS will not be deleted)

Go to Settings, search Application Management, find the information, and click Save > Delete data.

3. Restore the network settings

Enter the settings, search and restore the network settings, click Restore the network settings (WLAN, Bluetooth and other related data will be deleted), and then try to send SMS.

Warm reminder: This operation will not delete data or files, but only restore the settings of WLAN, mobile data network and Bluetooth (such as hotspot connection information and Bluetooth pairing information), and other mobile phone settings will not be restored.

4. please back up important data (applications such as wechat /QQ need to be backed up separately), and then perform the operation of restoring factory settings

enter the settings, search for restoring factory settings, and click Restore Factory Settings.

Warm reminder: This operation will delete all data in your memory device, including account, system and application data and settings, installed applications, music, pictures and all files in the internal storage space.

if the problem still exists, please back up your data (WeChat /QQ and other applications need to be backed up separately) and then take the purchase voucher to Huawei Customer Service Center for testing and processing.