Not receiving notification or sound on locked screen

I don't recall you saying you have Apple Watch until just now. If you are wearing your watch, it is dominant and your phone will NOT alert you when you have Apple Watch on your wrist. This is by design. The reason you are getting notification if you turn Bluetooth off is because you are then breaking the connection from your phone to watch in doing so.

Hello,

See this:

1. Is the side mute button on?  Does any red show?How about the volume buttons?  Is the volume very low?
2. Go to Settings > Sounds & Haptics.  Check the Ringer and Alerts slider.  Try changing the sound pattern for the type of alert.
3. Go to Settings > Notifications.  Is the app listed? How about "Show Previews"?
4. Do other sounds work?  What about phone calls?

Good luck.

Do you have an Apple Watch that you use with your iPhone?

If you do, you might want to learn how notifications works when these two device are in use: https://support.apple.com/en-ie/HT204791

Otherwise, try to nuke your Bluetooth configuration, remove/forget all configured devices and test again.

This happened to me. Visual notifications were working, but no ringing on IPAD (The iphone rang though!). Checked every setting that had been suggested, which made no difference.

Then I saw an enigmatic reference to issues related to Wifi glitches somehow not picking up IPAD settings.

So I disconnected Wifi on the IPAD (Wifi OFF) and then instantly reconnected to the same Wifi. Would you believe it - it worked.- FaceTime now notifying calls with sound.

I cannot explain how a wifi connection relates to sound in FaceTime, but it worked for me

We were having issues with the iwatch, as well, but we found the update altered settings. You can turn on iwatch sounds by:

https://support.apple.com/en-us/HT204793?fbclid=IwAR1g675xFJlOxUyxNk1Y2fyWUxNhHRnUBqrEf_DCHhns4o6BXzd9cG5Bsro

Also for it to work bluetooth had to be turned off in settings. If you turn off from control center will not work.

Helping my Mom . . . we did all those things, too. Locked screen, no sound for imessage.

Since this started after updating to iOS 13.4.1, do a forced restart (recommended after doing iOS updates).

See this link for directions --> Force restart iPhone - Apple Support

I tried the bluetooth nuke and did not work. Interestingly if I turn off blue tooth I get texts on locked screen. Any advice?

Thanks

Tried force restart. Still not working. Also tried unpairing and repairing watch.

Have you had any luck with a fix?

Sound is not playing on watch either. When watch is off, or off wrist same problem.