App lock checks Apps installed on your device and recommends the Apps that require protection for the first time.
1. Go to
Settings > 
Apps > App lock.
2. Tap Turn on.
3. Set the Pattern password.
4. Choose to add or not add a Xiaomi Account.
5. Select Apps and tap Use App lock.
Note
You can choose to turn on fingerprint unlock.
1. Go to
Settings > Apps > App lock.2. Tap Turn on.
3. Set the Pattern password.
4. Choose to add or not add a Xiaomi Account.
5. Select Apps and tap Use App lock.
Note
You can choose to turn on fingerprint unlock.