Screen pinning is a smartphone feature that retains a single app on the screen. When you have a high privacy alert situation, you can use screen pinning. Occasionally, you pass on your mobile phone to kids or friends or on the worst-case to your boss. These circumstances are mostly unavoidable. They sometimes open other apps knowingly or unknowingly which may have personal data.
To avoid such unnecessary encounters, use screen pinning to lock the app. It is a simple three-step process.
Settings → Security → Screen pinning. Turn it on.
You can improve security by providing a PIN to unlock the screen pinning option.