Feature was first spotted by fan ##atic Android ##tion on a Nexus 4 . Option appeared in the Smart Lock security update on Android Lollipop . Once a phone is unlocked , the screen remains ' open ' while it 's being held . It also uses the phone 's accelerometer to remain unlocked even in a flash . screen has n't confirmed feature but it 's been spotted on multiple occasions . It is unclear if screen could be accidentally used to call 911 , for example .
Feature was first spotted by fan site Android Police on a Nexus 4 . Option appeared in the Smart Lock security menu on Android Lollipop . Once a phone is unlocked , the screen remains 'open ' while it 's being held . It also uses the phone 's accelerometer to remain unlocked even in a pocket . Google has n't confirmed feature but it 's been spotted on multiple devices . It is unclear if screen could be accidentally used to call people , for example .