We have an iPhone that has location services disabled since we've usually been able to find the device simply with the Find My Phone "Play Sound" function.
Unfortunately, we think the device might be hiding in one of our bags and thus we can't locate the phone by listening for the sound.
I've never used Lost Mode, but I have read ambiguous information that leads me to wonder: if I turn on Lost Mode for a phone, will it temporarily enable location tracking for the device so I can figure out where it is?