My phone will beep when the screen is locked

[Android Central Question]

I own an LG Q7 plus on the MetroPCS Network when my screen is locked or the timeout function kicks in I get a consistent beeping and the phone will beep even though my device shows charge at 97% any on any ideas on how to stop this

 

[B. Diddy]

Welcome to Android Central! Is it a simple beep, or a more elaborate tone? Does this go away if you turn off NFC?