Any suggestions for an in car hands free solution for answering call on my iPhone 5S (ya, I know, ancient, but it’s soon to be replaced by the new Xr). Thanks!
Reading more about it, it looks like a choosing between using the Aux In or FM. Whereas Aux In is direct and FM competes with radio interference, the better of the two would be Aux In, if you have it.
You should use a bluetooth receiver like these where your iPhone can connect to this device and relay it directly to the aux in port on your vehicle. You can also use these receiver to turn a wired headphone into a bluetooth headphone too.