How does Smart Lock work? What is Smart Lock? How do I set up Smart Lock? Which Smart Lock types are available in my Xperia phone? How do I use Smart Lock to keep my device unlocked in certain situations? ?

Solution

The Smart Lock feature unlocks your device automatically in certain situations. You can set your device to unlock, for example, when it’s connected to a Bluetooth® device, when it recognizes your face or voice or when you’re carrying it with you.

To prepare your device to unlock automatically, perform the following steps:

• Make sure you have an active Internet connection, preferably a Wi-Fi® connection to limit data traffic charges.
• Make sure that all your apps are updated using the Play Store™ application in order to ensure that the Google Play™ services app is updated. Having an up-to-date Google Play™ services app ensures that you can use the latest Smart Lock features.
• Enable Smart Lock.
• Set when you want your device to unlock automatically by selecting a Smart Lock type. 

Smart Lock types

• On-body detection - keep your device unlocked when you're carrying the device with you. 
• Trusted places - keep your device unlocked when you're in a trusted location.
• Trusted devices - keep your device unlocked when a trusted Bluetooth device is connected. 
• Trusted face - let your device unlock when it recognises your face.
• Voice Match - allows you to access and interact with Google Assistant even if your screen is locked. 

To enable Smart Lock

1. Make sure that you've set a pattern, PIN or password for your screen lock.
2. Find and tap Settings > Lock screen & security > Advanced > Trust agents.
3. Drag the slider beside Smart Lock (Google) to the right.
4. Tap the back arrow next to Trust agents. 
5. Find and tap Smart Lock. 
6. Enter your pattern, PIN or password. You need to enter this screen lock any time you want to change your Smart Lock settings. 
7. Select a Smart Lock type and follow the on-screen instructions to enable it. 

Note 1: The Smart Lock feature may not be available in every market, country or region. Keep in mind that Smart Lock as a security feature is less secure than a pattern, PIN, or password. 
Note 2: The Smart Lock feature is developed by Google™ and the exact functionality may change over time due to updates from Google.