Hi MWK2, welcome to the community!
Does the same issue occur in Safe Mode? I advise booting the phone in to Safe Mode so we can determine whether the issue is being caused by a third party app or not first.
To boot your phone in safe mode press the power key until the Power Off message appears > hold your finger on Power
Off for 2-3 seconds until 'Reboot to safe mode?' appears > tap OK. To exit Safe Mode just power the phone off & then on normally. If the issue was not present in Safe Mode, that indicates a third party app is causing the issue. In this case exit Safe Mode and then un-install any third party apps you don't need and clear the cache/data for the apps you want to keep. If this doesn't help or you have found that the issue was still present in Safe Mode - you will need to run a software repair on the handset.
