Why didn't BBK receive the SMS prompt label?

Do you mean the number of unread messages? If there is, you will not see the received text message, but will appear if you don't see the received text message. It is recommended that you try the following actions on your mobile phone:

1, restart the phone,

2, put the phone into settings-more settings-restore factory settings-try to restore all settings, restore settings will not lose data.

3. Click "Settings->; System upgrade-> Check for updates now "to upgrade the update system.