Originally Posted by DGipson
On my phone (Samsung Galaxy S2), it's WIFI interference. WIFI and Bluetooth are on the same frequency and I guess the phone software isn't smart enough to disable one when using the other.
When WIFI is enabled, I get horrible breaking up audio on the first call and then slightly better after that (I guess the phone "learns). So now, before I hop in the Jeep, I disable WIFI and take off. Works like a charm.
This makes loads of sense, since Wi-Fi and Bluetooth both occupy a section of the 2.4 GHz ISM that is 83 MHz. So there will likely to be interference. Usually the bluetooth will hop around different different channel widths as the wi-fi will usually remain focused on one (FHSS Vs. DSSS) but depending on signal strengths they can cause interference.
Actually, now that DGipson has brought that up, it makes a lot of sense. Give it a shot and let us know what happens.