All smartphones are. There's only so much you can do to cover your track. There's most likely always someone knowing where you are if your phone is powered on (or even powered off with Apple Find My network). https://9to5mac.com/2021/06/07/ios-15-find-my-network-can-fi...
There's also the cell layer, which constantly negotiates with cell towers for sector and power as normal idling. So they know your location at least to tower (CGI), sector and delay (CGITA) and sometimes trilaterated (UTDOA) from ~1000m down to 10m accuracy. The towers' base station controllers need to keep logs anyway, so the cell company has records of your rough location.
Then there's bluetooth, wifi, audio beacons, optical, magnetic and inertial nav, all emitting or recieving you move through the world. None of this requires GPS, some requires app participation, some doesn't.
All phones are location and surveillance devices. Leave it home if you're serious.