No Text Sounds or Notifications when screen locked
I've had an issue where when my phone is locked screen, the phone does not play a sound or display a banner when a message is received. The phone is NOT in do-not-disturb/silent mode, nor is are the contacts set to do-not-disturb. the notifications for messages are turned on default sound, and the vibrate is turned on for messages as well. The phone receives notifications and banners normally when the screen is unlocked, but if the phone screen is locked it does nothing when a message is received. (the phone receives phone calls no problem when the screen is locked. I've tried for over a year to get the messages to work. I have been on an iPhone XS Max on ATT for the last couple of years. This week I switched to TMobile and bought a new iPhone 14 Plus. Excited to have my text notifications back after a few years of not having them... and sadly, i still do not get notifications when a message is received and the screen is locked.
I am now thinking this must be related to my icloud id/settings in some way, since the phone is new and the service is another carrier.
any suggestions are much appreciated.
iPhone 14 Plus