phone sounds

so i have found myself, over the past couple of weeks or so, hearing things. like when i’m running and i think i hear my running app start talking to me to tell me that i have indeed  run another mile. i put my phone up to my ear though, and, nope, nothings going on there. so what did i hear? just murmuring voices somewhere? or what about the chime that is reminding me that something is on my calendar that i need to do. or the bell that dings when i get text messages.  the gong that sounds when i get a new email?…….

AM I GOING CRAZY?

or is it just that apple uses these sounds to grab our attention that actually belong to the world around us? or maybe it’s everyone else’s phones.

or maybe i have to many noises coming out of my own.