I hate my phone! It's new and my old phone was a lot better. However I learned a lot with coins in the 60's. The 68's are pretty regular on die clashes, and grease on the die's. A lot of the E's on reverse for E. Pluribus. Unum. Would barely be there as well as the ST on states. Also the 60 small dates had a lot of clashes. Anyway, I'm at home with my wife tomorrow due to her previous surgery. Ima take the case off my phone and see if I post better pictures then. Kids here so it's hard to do atm. Sorry for the crap photos.
It's not your phone that's at fault, it's your lighting! Try a defused lighting source. Place a piece of white paper between your light(s) and your camera, or just use the ultimate defused lighting source, daylight.