Even i dont get any notifications, it just opens itself. This unwanted feature just drain the battery. This happen on 165 and earlier firmware versions.
Answer how did you set these two options: Settings / Display / Standby screen / New notifications Settings / Apps & notifications / Notification manager / Notifications on lockscreen
Please answer my question about your settings. Only then can we move forward in solving your problem. Your phone may be infected with malware, and these settings may facilitate the behavior you describe.
There isn't anything on these settings which can do this. About malware, where you got this idea? i have Kaspersky av on my phone and its come clean. what options you mean on those settings?