1. Enable and then disableAirplane mode

This issue may be caused by a network delay or a server error. Swipe down from the status bar to open the notification panel, touch Airplane mode to switch it on, then touch it again to switch it off. The network should be able to deliver the SMS message again.

2. Check whether the phone numbers have been added to Blocklist

Check whether the corresponding numbers have been added to Blocklist. If so, remove the numbers from Blocklist based on your requirements and try again.

· EMUI 4.X/5.X/8.X: Go to Optimizer > Blocked > > Blocklist.

· EMUI 9.0: Go to Optimizer > Blocked > Block rules > Blocklist.

· EMUI 10.X/11.X: Go to Optimizer > Blocked > >Block rules > Blocklist.

3. Check whether unknown numbers have been blocked

Check whether you have blocked all unknown numbers. If so, disable the blocklist and try again.

· EMUI 5.X and 8.X: Go to Optimizer>Blocked> > Block rules > MESSAGE BLOCK > Block strangers.

· EMUI 9.0: Go to Optimizer > Blocked > Block rules > Message block rules > Block strangers.

· EMUI 10.0/10.0.1 and Magic UI 3.X: Go to Optimizer > Blocked > > Message block rules > Block unknown numbers.

4. Check whether the phone number has been saved to PrivateSpace

Open Settings, search for and access PrivateSpace, and open Messaging. If messages from certain contacts can be found, move them to MainSpace and try again.

5. Insert your SIM card into another phone and see if the verification code can be received

Insert your SIM card into another phone and see if the verification code can be received. If the issue persists, contact your carrier or third-party app provider. This issue may be caused by a communication issue withthe third-party app server.

If the issue persists

Clear the data and cache of the Messages app. (Your SMS messages will not be deleted.)

Open Settings, search for Apps, and find Messages. Go to Storage > CLEAR DATA.

1. Enable and disable Airplane mode

   This issue may be caused by a network delay or a server error. Swipe down from the status bar to open the notification panel, touch Airplane mode to switch it on, then touch it again to switch it off. The network should be able to deliver the SMS message again.

2. Check whether phone numbers have been added to Blocklist

   Check whether phone numbers have been added to Blocklist. If so, remove the numbers from Blocklist based on your requirements and try again.

   · EMUI 4.X/5.X/8.X: Go to Optimizer > Blocked > > Blocklist.

   · EMUI 9.0: Go to Optimizer > Blocked > Block rules > Blocklist.

   

3. Check whether unknown numbers have been blocked

   Check whether you have blocked all unknown numbers. If so, disable the blocklist and try again.

   · EMUI 5.X and 8.X: Go to Optimizer>Blocked > > Block rules > MESSAGE BLOCK > Block strangers.

   · EMUI 9.0: Go to Optimizer > Blocked > Block rules > Message block rules > Block strangers.

   · EMUI 10.0/10.0.1 and Magic UI 3.X: Go to Optimizer > Blocked > > Message block rules > Block unknown numbers.

   

4. Check whether the phone number has been saved to PrivateSpace

   Open Settings, search for and access PrivateSpace, and open Messaging.If messages from certain contacts can be found, move them to MainSpace and try again.

5. Insert your SIM card into another phone and see if the verification code can be received

   Insert your SIM card into another phone and see if the verification code can be received. If the issue persists, contact your carrier or third-party app provider. This issue may be caused by a communication issue with the third-party app server.

6. Restore the Messaging app to its default settings if the issue persists

   EMUI 4.X:Messaging>Menu > Settings>Restore default settings.

   EMUI 5.X/8.X: Messaging > More > Settings > Restore default settings.

   EMUI 9.X/10.X/11.X & Magic UI 2.X/3.X/4.0: Go to Messaging > > Settings, and select Restore default settings.

   

If the issue persists

If the issue persists, back up your data and take your device and proof of purchase to an authorized Huawei Customer Service Center for assistance.