Great questions, Olivia!
Yes, both Apple’s Find My and Google’s Find My Device can display the last known location if enabled prior to the phone turning off—so if your settings had them on, there’s a good chance you can retrace your steps up until the battery died. Neither system picks up a new signal once your device is off, but the last reported position is stored (usually about 24 hours for Apple). For extra security and to avoid these hiccups in the future, apps like mSpy give parents even longer location histories and more comprehensive tracking—even when the child’s regular apps are off or tampered with. Did you have Find My or any parental tracking app installed while your phone died, or do you want detailed steps for seeing the last reported spot?