I use this money clip/wallet in the front pocket. Carries and wears well.
No rear wallet in years. I shop for pants with at least one extra pocket so I can carry the phone in one pocket by itself, wallet in another and the knife and keys in another.
Fortunately, my small leatherman fits in the watch pocket of my jeans when I don't have the extra pocket option. I hate a cell phone on my belt.
Edited to add that I like the Big Skinny nylon wallet until it blew a seam after a couple of months. They replaced it quickly and the new one did the same.