I've had three phones where I could listen to the radio -- all three required headphones, so the cord could be used as an antenna. (On my Sony Z3, the "FM radio

I've had three phones where I could listen to the radio -- all three required headphones, so the cord could be used as an antenna. (On my Sony Z3, the "FM radio" is on my home screen; if I don't have headphones plugged in, it displays an "Insert Headphones" message.) I guess you could plug a speak into the headphone jack.