For some reason my ipad lost sound for awhile, no sound on youtube, facebook or music apps or site...NOTHING.. the speakers were out. I had to restart. This happened twice. why is this happening? i would like some feedback to this, please? this seems to be a new problem my ipad is having and i just need to know what could be causing it. i tried all my apps, youtube, spotify, etc. the volume was maximum... no sound at all, i even tested my notifcation samples.... nothing. so i rebooted... now theres sound. this happened twice now. and my ipad does not have a mute button on its side. the only 3 buttons on there is the power and volume up and down... thats it.