Base Photos app is broken
Recently, I found out that I was unable to download a picture from Twitter. It would not show up in the albums. When I try to take a picture, it would not show up in the Photos app as well.
I did a soft reset, but it didn't work.
I did a factory reset, and backed up to the last version before the malfunction of the Photos app, but upon tapping the Photos icon, it took a while to load, showing only white, and then none of the content would appear. There was not even albums like a Camera Roll on it. I couldn't switch between the Photos or Albums tabs. Not to mention that one of the tabs seems to be missing.
Another thing that I noticed is that when I went to the About section in Settings, Songs, Videos, and Photos would always be stuck on "Loading..."
This is on a iPhone 5. It was refurbished when I bought it, and the Photos app was working just fine.
The iOS version is 9.3.1.
iPhone 5, iOS 9.3.1