its a little thing but it pretty cool. like on my old ipod i would plug it into my car and blast the volume and then when i was done and went to put my headphones in to listen to it i would forget that the volume was all the way up and it would be super loud when i pressed play.
on the iPhone it remembers what volume setting you had it on when your headphone was plugged in so when you plug them back in it goes back to that volume
you can try it by first putting your headphones on and putting the volume were you like then unplug and let it play in loud speaker mode and raise the volum all the way up. then plug in back your headphone and it will go back down to the original volume you put for it earlier. i think its a pretty cool and underrated feature
on the iPhone it remembers what volume setting you had it on when your headphone was plugged in so when you plug them back in it goes back to that volume
you can try it by first putting your headphones on and putting the volume were you like then unplug and let it play in loud speaker mode and raise the volum all the way up. then plug in back your headphone and it will go back down to the original volume you put for it earlier. i think its a pretty cool and underrated feature