Its a tricksy one.

There are more mobile phones than people in the UK.
People need their phones. Phones need signal. Signal requires transmitters.

Jury is out on whether they are dangerous or not. Its a cavalier attitude that ignores health risks, but as far as we know they are not dangerous.

If we stopped using all the technology that might be harmful to us in some way society would collapse. You have to go with what you know - and the current thinking is that they are not dangerous.

I really hope they have got it right. No one wants another thalidomide.