Well I go camping for two weeks every summer, in a random field in the countryside, entirely sans technology (Even trangias[footnote]Bonus points if you know what one is, double bonus points if you can correct my probable misspelling[/footnote]), usually a different random field each year.
But the organisation that organises random field camping tells adults to bring mobile phones, in case of the need to contact/be contacted by the outside world, though they should be kept off at most times, and only used to contact the real world in emergencies.
Anyway, expostion into my real life over, that means that I bring a phone, and nothing else techy.