If yes, then we must look further...is the position (not the switch itself) of a binary switch (like a light switch) a physical thing that you can own? Would you consider it destroyed if it was switched away from it's original position?
the light switch is not something intended to store data, but the memory in your phone is. wiping the data destroys all the photos, media, logins, configuration on your phone, making them permanently and irreversibly inaccessible. and all of that is my property.