Okay it's now stuck on 100% My phone thinks it's the energizer bunny!
Tried Factory Reset, Clear Partition cache and charging. I'm out of ideas. Oh and the Kindle app has disappeared from App list in settings. I notice I got alot of component updates past couple days and that's when it all started. I'm wondering why Amazon can't leave things alone. It's an old phone it doesn't need new stuff.
Okay no longer stuck. Now waiting to see if I can run it to real 0% it started acting more normal after I blocked all content but apps and photo. I'm wondering if new components and my very large cloud library of books and music are causing the sync to go haywire on such an old device.
I'll report back later.