Is it that easy with iPhone? Of course my previous phone (screen shattered) won’t hold a charge for sh*t...That's where the cheap android phone trick I mentioned comes in. Phones have really good GPS support, and you link it to your android account with location services turned on, and you can go to your google maps timeline and see the entire history of where the car has been. The Google "Find My Device" app gives you instant realtime location. All you need is an old Android phone you don't need, which a lot of us probably have by now (I used one I smashed the screen of), and a prepaid sim you can top up the credit for online from time to time. Cheap and works a treat. Far better than a paid service or GPS tag.
The phone is a really handy device to have linked in too. If I wanted to get really fancy, I could use the android phone to bluetooth to some hidden device in the car and to all kinds of evil stuff. Maybe turn on a hidden mic and camera, and start recording it all and uploading it to the cloud, so there's video and audio for the police when they want to prosecute. Or connect to the radio, crank the volume, and play a clip that says "To the bastard who's stolen my car, I'm an explosives expert, and have embedded enough C4 in the driver's seat to blow your balls off. Don't move. If you get up, it will detonate. Return the vehicle to where you found it, and I may choose to disarm the device.