All iCloud photos not uploading to iCloud Photo Library
I am having trouble figuring out why I have a different number of photos on my iPad Pro 9.7 and iPhone 6s, I hope someone can help!
I have iCloud Photo Library turned on with the "optimize iPad/iPhone storage" toggle set.
Under manage storage, I see there are 11,784 photos in iCloud.
My iPad reports 11,784 photos. Perfect!
My iPhone reports 11,816 photos (none of these numbers include videos, that number is correct everywhere).
I tried turning off iCloud Photo library on my iPhone, hard reset, turning it on, and waiting for the upload etc. to complete. There was no difference, so it's as if something on the iPhone does not upload to iCloud.
It's not Live Photos I don't think - tring to figure out what I have done a small amount of - I tried taking a Live Photo and it showed up in iCloud and on iPad, then I deleted it on the iPad and it deleted everywhere.
How can I diagnose the problem, if it is one? Or is there some type of photo I can take on an iPhone 6s tha won't upload to iCloud Photo Library?
Thanks!
iPhone 6s, iOS 9.3.1