Let’s say, you lose your phone somewhere and an honest person finds your device;
He wants to contact you and let you know about your device. He sees your phone number (and/or email address) on the lock screen of your device.
He contacted you, and you got your device back.
All went well, right?
All these are possible because he can contact you with the information on the lock screen.
I hope you got the point. So, add your information on the device right away and increase the chances of getting the device back (if lost).
Well, you do not need an app for this. You can do it using Android’s inbuilt option "Lock screen message" which got introduced on MarshMallow.
It is similar to the "Owner info" (you can find it in the Settings > Security) in the older Android versions.
Let’s see where we can find "Lock screen message" option and how to add the message to lock screen.
Add Lock Screen Message on Android
Put your device in standby mode and then wake it up. Now, you can see the message that you have added.
Here are few things that you need to note: