Does a working sim have to be installed to use an Iphone as an MP3 player? I have pretty bad Tinnitus,and would like to be able to play some of those "white noise etc" mp3's to cover all the noise my Tinnitus makes while trying to go to sleep at night. I'd use blue-tooth to power an external speaker. Can this be done without installing a working sim card? If so, how long might you expect a fully charged battery in new condition to run an MP3? Maybe 8 hours possibly? In the event the phone couldn't play that long, could you plug it into your charger to power it? Hauling a laptop into the bedroom every night and then hauling it back out in the morning is getting bothersome.
Thanks.
Thanks.