I'm in the market for a new phone and one feature I'd really like is a 3.5 mm 4-conductor TRRS port. I have a noisy convertible car and would like to be able to use an earbud headset with built-in mic (hence the extra conductor). I've been looking at several phones (for Verizon) and reading/searching through their manuals, etc., but haven't found the info I'm looking for. Any hint/help welcome! Thanks gang!