You say when you're using the phone, do you mean when you're on a call or just anytime you have the phone in hand, playing a game, surfing, social media? If it's happening while you're on a call there is an option to allow notifications while on a call, try disabling that and see if you still get them. If it happens while you are in an app, like checking email or social media there may not be anything that shows up in your notification bar because you're in the app that is alerting you. It would help if we knew what device you have and what you mean by it happens while using the phone.
06-01-2019 08:07 PM