Lost Iphone played sound - but is dead?

My iphone is lost and was last marked as out of battery on Find My iPhone. I’ve tried many times to “Play a sound” but I know for sure that the battery is dead (black screen on Find My)

Last night I received an email from Apple that a sound was played around midnight. I had run to check Find My but the phone was still seeing black and the last known location/date was not changed.

Is it possible for a phone to “Play a Sound” and Find My to not update location? ie removal of SIM card or? The phone HAS to have been charged in this situation right?

Thanks!