I don't know if this happens with IOS7 users because I have IOS6, but whenever I stop the music on the iHeartRadio app and then a while later I end a phone call, the music will start playing again when I haven't even pushed play on one of my stations. It plays the music after I'm done with almost every call. Same with amber alerts; if I get an amber alert on my phone the music will start playing (both these things usually only happens when I've listened to the iHeartRadio app at least in the previous 3 hours). So if other IOS6 users are having problems similar to this please fix it and send out another update for this app! Please and thank you!