I put my battery in my phone this morning and it wouldn't turn on. The battery is fully charged (I use an external battery charger, since charging port no longer works) so I know that is not the problem. I tried the whole hold down power & volume up/down thing, but nothing happened. (I know that is not the technical name for it, but I can't seem to remember what it's called right now) Has this happened to anyone else? Does anyone have any ideas what the problem might be or how to fix this?