I use the Samsung Official Black Leather Back Case.
I also use a dbrand Camera Module Skin.
I also use the Whitestone Dome Glass Screen Protector @RachaelMargSteele
Current Phone >Samsung Z Fold³ 5G.
Previous Phone > Note 20 Ultra 5G SM-N9860.
Got my 20 ultra last week. I’ve been using Spigen for the last few years and just love them.
On this phone I have: Spigen NeoFlex wet application screen protector (it gives a great feel to your finger when sliding) with a Spigen liquid crystal clear flexible case. The case does not interfere with the screen protector.
My only criticism with this case is, because the camera lenses jut out at the back, it makes the phone too unstable to type with when lying flat (ie. it doesn’t lie flat!)