Why No Ding on Text Message?
Go to Settings > Notifications > Messages and Verify That Show on Lock Screen Is Toggled On. for Sound Alerts, Also Check That Settings > Notifications >...
Go to Settings > Notifications > Messages and verify that Show on Lock Screen is toggled on. For sound alerts, also check that Settings > Notifications > Messages > Sounds has an alert type selected and does not display None or Vibrate Only unless that's the setting you want.
Why does my iPhone not make a noise when I get a text?
Make sure you have selected a tone for the incoming text messages. On your iPhone, open the Settings app and go to the “Sound & Haptics” section. Then scroll down to “Sounds and Vibration Patterns” section to find the “Text Tone” option. If it shows None/Vibrate Only, tap on it and select an alert tone.
Why doesn't my phone alert me when I get a text?
Try these steps: Go to Settings > Sound & Notification > App Notifications. Select the app, and make sure that Notifications are turned on and set to Normal. Make sure that Do Not Disturb is turned off.