Yes — you can read a WhatsApp message after the sender deletes it, as long as it reached your notifications first. An app with notification access, like AppLock Master, keeps a copy of each notification as it arrives. “Delete for everyone” changes the chat, not that copy.
How it works
Almost every message on an Android phone passes through the notification shade on its way in. With notification access turned on, AppLock Master keeps a copy of each notification as it arrives: who it was from, what it said, which app and when.
Deleting a message later changes the conversation inside the messaging app. It doesn’t reach back into a notification that has already been shown, so the text stays in your history.
The chat changes. The notification that already arrived doesn’t.
How to set it up
- 01Open AppLock Master and turn on notification history.
- 02Allow notification access when Android asks. This is what lets it keep notifications as they arrive.
- 03Choose the apps whose notifications you want to keep. New messages are saved from then on.
What it can’t recover
- ✕Messages that never reached your notifications: a muted chat, a chat you had open at the time, or an app whose notifications are off.
- ✕Anything that arrived before notification access was turned on.
- ✕Photos, videos and voice notes — a notification carries text, so for a photo that’s the caption or a line like “Photo”.
- ✕Messages from apps that hide their content in notifications.
Hide previews too
The same access runs the notification blocker. Pick apps whose notifications should never show in the shade or on the lock screen, and nothing previews for someone looking over your shoulder. Nothing is dropped; the message is moved somewhere private, and you read it inside AppLock Master.
More detail: Notification history in AppLock Master →