When it comes to a an X5 All phones with bluetooth are not equal.
It's a by the phone basis. My Palm wasn't suppose to work at all
but come to find out it does. However there was one caveat. In order
to dial the phonebook in the X the numbers had to be in listed in
"Favorites" in the palm otherwise the X looked and looked for numbers
to download but found nothing.

Does that mean your wifes LG will work? Can't say but there are
circumstance where phones that are not suppose to work, will work

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….