Originally Posted by anaggie

Was in Leon, Mexico for three days and used my 5S everywhere with the following applications:

-- 3G was the speed that I maintained
-- GPS did download, but I did not really use it as I work with a local who takes me everywhere. Will try in Rio at the end of this month.
-- Facebook worked just fine and the uploads of pictures went ok, slightly slower than 4G or LTE as expected
-- the AOL app took a bit longer to load but emails worked fine once it did

HUGE POSITIVE if you and your family have iPhones:

-- Wife would call me on FaceTime Video from our house thru wifi and I was able to answer the call in 3G and have a good video chat with her -- it would freeze every once in a while, but it was not that often.

-- Was able to place and answer FaceTime Audio calls perfectly with very good quality and this is a huge benefit since these calls are all free.