I can't seem to get my sprint radio to play through my 3.5mm jack. I managed to do it once in my car during a trip, but haven't been able to reproduce that since.

It just plays out of the phone's speaker.

Is there a trick here I am missing?

not trying to be funny..but did you push the jack in all the way? Ive noticed that its a pretty snug fit and if you arent pushing the jack in all the way, your headphones wont work.

not to sound smart-arseish...but when i .first. got my pearl, i was afraid to plug the headphone jack in all the way. lol...it's a VERY snug fit....just make sure the black rubber snugs up against the phone, then you should hear sound!!

I'm having the same trouble. They 3.5 jack works when I play mp3 music I have on my sd card. But it will not work when I'm using Sprint TV/Radio. Anyone have a fix for this, it use to work.