My cricket wireless ZTE grand x4, aka z956, has a recurring problem where it won't recognize headphones. The headphones icon doesn't show up in the status bar and audio from any app plays through the phone speakers. I know it must be a software issue because it is intermittent (usually after running for at least a day) and solved by restarting the phone. I did a hard reset last week which solved the problem until yesterday when it came back, so I have to restart my phone every now and then when the headphones won't work. At this point I'm completely lost as to which direction to go with this problem. I'm considering sending the phone in under warranty for repair but don't know how much good that will do. Any help is appreciated. Thank you.