dnd-while-drivinggeolocationgpsiphone
Recently acquired an iPhone SE (after a factory refresh), and I have location services turned off.
Twice recently I've taken a train, and had the pop-up/splash screen offering to turn on do no disturb when I'm driving.
How does the phone know I'm "driving"? It would be easy to tell via GPS from my speed, but I'm sceptical it would be possible using an accelerometer (trains are pretty smooth). Is my phone still recording/tracking my location even with location services switched off?
There is no way to easily find out when the phone powered off due to the battery dying. You can, however, get your battery life by charging it completely (till 100%), let it die, then charge to power it up and then going to Settings > General > Usage > Time since last full charge and adding up the times for Usage and Standby.
I know this question is old, but I just found the the same happening for me.
First off, you can see when your location services are currently in use when a little North-East arrow appears on your status bar next to your battery.
One way to find out which apps are using location services, is to start closing apps one by one and checking when that arrow disappears.
A better way is to look at the Location Services settings Settings > Privacy > Location Services. Here you can see all the apps that have requested access to Location Services and also what permission they have been granted ("Never", "While Using" or "Always"). Best pay special attention to the apps that show "Always". This means they can use Location Services even when the app is not active. This screen will also show a purple North East arrow next to apps that are actively using Location Services right now.
If you don't want the offending apps to have access to Location Services you can change their access to "Never" or "While Using" to limit the damage. Note though that depending on the apps purpose it might stop performing as desired.
Best Answer
It's not geolocation. It's detection of specific motion. See Settings > Do Not Disturb.
See How to Use Do Not Disturb While Driving