ipad 3rd gen. The sound works on an off randomly while not charging but never works for more than a second. Also you can't change the volume with the side button during this, it only works during the short working periods. When I plug it in to charge, it works flawlessly even the side volume button. Using the headphone jack doesn't matter the same results occur. I've reset it about 4 times now with no changes. I've cleaned the charging and headphone ports and my battery seems to be fine holds a charge for a good long while. Any suggestions?