Technology Facebook introduces 'Sleep Mode' for parents in Messenger Kids Updated : April 28, 2018 12:09 PM IST When the app is in Sleep Mode, kids cannot send or receive messages or video calls, play with the creative camera or receive notifications. If they try to open the app, they'll see a message telling them that it's in sleep mode and to come back later. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.