Sorry to everyone for my last 10 pics or so having grainy, washed-out looking thumbnails

I don't understand it - it isn't JUST the ones set against a bright cloudy sky or white snow. I'm using the same stupid iPhone 5C that I've been using for the last 3+ years now, but the results are recently different....

Once I click on the thumb, the main image is fine, but the initial TN is garbage.

Sorry folks.

I'm hoping to upgrade my methods soon...