They see a crash. You get in.
With Fake Cover on, anyone who opens a locked app sees “Unfortunately, the app has stopped working” instead of a lock screen. Most people tap OK and move on. You long-press OK for about two seconds to reveal your real lock.

Unfortunately, Gallery has stopped working.
Nothing to guess
A lock screen invites someone to try PINs. A crash message tells them there's nothing to see.
Only you know the trick
The real lock appears only after a long press on OK, and you still need your PIN, pattern, knock code or fingerprint.
Works with every locked app
Turn it on once and it covers every app you've locked.
How to turn it on
- Open App Lock and go to the Advance tab.
- Tap Fake Cover and try the demo.
- Pass the demo to switch Fake Cover on.
- Open a locked app, then long-press OK to unlock.
Questions
How do I get past the fake crash message?
Press and hold the OK button for about two seconds. Your normal lock screen appears.
Does a fake crash make the app actually close?
No. It's only a cover over the lock screen. The app isn't affected.
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