If you use an Android Smartphone, it’s almost certain that you noticed how the notifications that are displayed on your lock screen also show some content from the apps that generate them. Some of that contents can be important from a privacy or security perspective. After all, you might not want your work colleagues to see what your wife or husband writes to you, while you leave your smartphone on the desk. Even if you’ve set a PIN code, a fingerprint or any other form of locking your Android smartphone, the contents of notifications is still displayed on the lock screen, by default. The good news is that you can change this behavior and stop sensitive content from being shown in Android notifications. Here’s how it is done: