It requires that there be a connection to the headphone jack so the cord for the headphones be used as an antennae, but that connection is not made on all phones that use the chip, its not the same as the audio connection to the headphones.I was checking my opo ..fooling around and saw this "Qualcomm WCN3680" and then I saw an FM radio hmmm I thought OPO didn't have, then google it and here we are
Why use a chip with fm tuner and disable it? ..unless it's defective ones from qualcomm with fm tuner in a non working condition ..but cheaper [emoji14]