Hi @LJNS
I have the Samsung Galaxy s²² Ultra model which I've owned since launch day.
My phone has been either in official Samsung Black Leather Back Case or a UAG Monarch Kevlar Case with no issues to the casing of the phone.
Which case is yours in may I ask ?
It's possible cases may have an effect on phone's especially if some grit / debris etc has managed to get in-between the phone and Case causing marks.
This is why I choose to apply a dBrand Skin on the back which also envelops the sides.
Other than that I'd recommend a person periodically removes the case to wipe the phone and the inside of the phone down with a microfiber cloth.
Daily Driver > Samsung Galaxy s²³ Ultra 512Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
