Smartphones seem to have changed public behavior, not necessarily for the better, at least in the USA. It's become much more difficult to identify ambulatory schizophrenics, for example--since a person walking down the street talking to himself is perhaps not certifiably mad, just chatting to a buddy. Smartphones have also destroyed a formerly amusing pub pastime, the sports bet--when one can just whip out one's phone to get an answer, it's less amusing to argue about who won the World Cup in 1978.
Altho not a concern in Creuse (as far as I know), folks vacantly talking about their tedious personal agendas has become a pet peeve of mine. Cell-phone jammers are strictly forbidden in the USA (dunno about France), and I've tried to get my nephew, who travels frequently to Asia, to sneak one in for me, so when in a bus I could surreptitiously squelch the kid who is loudly sharing details of his lunch with an invisible chum. Also, I understand that in Japan, movie theaters and concert halls routinely block cellphone signals, which does prevent irritating ringtones interrupting the show.