(no subject)

Anyone know why my (Sprint) phone sometimes randomly plays the tune it's supposed to play only when starting up? I'm pretty sure it's already on when that happens, because I didn't hear it turn off. It's most likely to play the tune when I'm traveling, whether by car or on foot, so maybe this is a matter of reception. The growing frequency (NPI) of the phenomenon leads me to believe that the phone is weakening with age.