Repeating notification on phone

[Android Central Question]

Since a few weeks I have been getting constant notification alarms on my phone (Sony Xperia XZ Premium). It's extremely annoying. Does not show what the notifications are for. I turned off apps and notifications but alarms keep coming back. Anyone got any ideas what it could be and how to get rid of it.

 

[B. Diddy]

Welcome to Android Central! I'm not sure if this option is on Sony phones, but go to Settings>Accessibility and look for a Notification Reminder option.

If that isn't present, then try turning off NFC, in case this is the NFC alert tone.