One other thing! The first time I was unable to use the wifi was after the
phone had been in airplane mode for a long airplane flight. I didn't
notice the wi fi problem until I had to use wifi in a low coverage area a
day or so later I replaced the phone in NC ( that's where I was visiting)
as I was at the end of the 2 week return period. The second phone's wifi
worked great in NC. Then another long flight in airplane mode back to
Seattle and wifi showed the same symptoms after taking it out of airplane
mode.
Sorry if this is TMI! Thanks again!