You’ll still see app notifications, but only if your phone is unlocked.
How to Hide Lock Screen Notifications on Stock Android
OpenSettingsand selectSecurity & privacy.
Scroll down and chooseMore security & privacy.

TapNotifications on lock screen.
ChooseDon’t show notifications at allto hide all alerts, or pickShow sensitive content only when unlocked.
How to Hide Lock Screen Notifications on Samsung and HTC
Other Androids work a little different.

Here’s where to go in prefs to turn off Android lock screen notifications:
OpenSettings.
If none of these methods work, search forlock screenin theSettings app.