I was not intending to question it’s usefulness, merely the assumption that everyone has a smartphone and lives where there is a signal, but, just because every 18-39 year old male seemingly walks round with a phone to their ear does not mean we all do it.
A quick check round friends and family suggests that phones are shared, carried in some else’s pocket cos they won’t fit in a handbag, only switched on when they are needed as the battery is low etc etc etc.
You cannot assume that everyone has a switched on smartphone on their person at all times.
Mike
Added, false information can be more dangerous than no information