I'm asking here for a friend. The truth is that I haven't taken a proper vacation in years, and a lot of my travel tech is out-of-date. The last time I left the country, for example, it would have cost an astronomical amount to use an phone abroad. But plans and options have changed, and it may not make sense to do what I did ages ago, which was buy a cheap phone and a SIM card upon arrival at my destination.
I'm also curious about your favourite laptops, tablets and cameras to travel with, and if any apps or services have been such life or time-savers that you can't imagine adventuring without them. On the other side of the spectrum, maybe you've found yourself going low-tech for vacation -- cutting the cords and bringing not much more than paperbacks and sunglasses. Tell us how you outfit yourself for planes, trains and automobiles.
Seasoned travellers, what say you?