Text notification no sound

Have you enabled Scheduled Summary?

Settings > Notifications > [Select the App that you are having trouble receiving immediate notifications]

See the pic below for a few examples. Please select immediate delivery.

Go to Settings and tap Notifications. Select an app under Notification Style. Under Alerts, choose the alert style that you want. If you turn on Allow Notifications, choose when you want the notifications delivered — immediately or in the scheduled notification summary.

Use notifications on your iPhone, iPad, and iPod touch

Change notification settings on iPhone

1. Go to Settings > Notifications.
2. To schedule a notifications summary, tap Scheduled Summary, then turn on Scheduled Summary. ... 
3. To choose when you want most notification previews to appear, tap Show Previews, select an option—Always, When Unlocked, or Never—then tap.

More items...

Change notification settings on iPhone - Apple Support (IN)

You can allow access to Notification Center on the Lock Screen. Go to Settings > Face ID & Passcode (on an iPhone with Face ID) or Touch ID & Passcode (on other iPhone models). Enter your passcode. Scroll down and turn on Notification Center (below Allow Access When Locked).

View and respond to notifications on iPhone - Apple Support (IN)

Here are some additional tips for troubleshooting notification problems on your iPhone:

• Make sure that your iPhone is not in silent mode.
• Check the notification settings for individual apps to make sure that they are turned on.
• Make sure that your iPhone is connected to a Wi-Fi network or cellular data network.
• Restart your iPhone.
• Update your iPhone to the latest version of iOS.
• Contact Apple support for help.

suzyQpdx Said:

"Text notification no sound: Yes, I’ve checked notifications for messages and green buttons on. Just lost sound within last week. Not sure what to do now"

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Alarm Sound Missing:

Upgraded to iOS17? The seems to be a commonly-reported error on these forums. Question is: "Just how many have reported it to Apple?"

Recommend this to Apple:

Do your Part: Being of no option, let apple know what feature(s) you want to see added. Apple wont get back to you directly, but the more they hear of this, the more they will know what their customers prefer and what features need to be added in versions to come.

1. Go here: Feedback - Apple Pay - Apple
2. Select: "Feature Request" for the "Feedback Type"
3. Type: "Passport" in "If other, please specify"
4. Comment: That you want this to be an option and why.
5. Proceed from there as necessary