Depending on your iPhone settings, it will STILL track location in find my iPhone and life 360 (if installed - popular family tracking app) even powered down.
Having been in your situation before, here is EXACTLY what I did to work around it, with no office or other place I was "supposed to be" to leave the phone. This also depends heavily on you having a burner phone for hobbying. Let me just say, a burner has its complications (i.e. spouse finding it, knowing you don't have 2 phones otherwise) but it outweighs them with good.
Find out where the incall is and along the way but close by, find a Home Depot or Lowes with those storage sheds outside. Act like you're looking in them for a few minutes, and slid your main phone on one of the rafters, or other hidden spot in the thing. Go do your incall, using burner for directions, alert your there etc.. , then come back and retrieve the phone. It's easy to explain away you had a shit signal in Home Depot, and that you spent an hour there fucking off and didn't see her texts. Especially if the place has a elotes/nacho/hot dog cart.
Again there's risk, but I never lost my phone. They're pretty much empty and void of people 99% of the time. This won't work after closing hours either, even if blogs are left open, the cops aren't going to like you prowling if they see you.
My ex wife caught me hobbying once. I like to say I talked my way out of it, but I just prolonged a divorce for a couple more miserable years (lots of issues). She then tracked my phone and watched money like a hawk. There's always a way.