If I make a phone call and hold it up to my ear, then lower my phone down to my side, after 10 seconds the phone automatically hangs up. Is this action by the phone, automatically hanging up, a featuren or a bug? Feel free to try this yourself. Make a phone call, after the call connects, set the phone on a table, do not touch it or use speakerphone, and wait 10 seconds. Your phone should automatically and the phone call.