Denmark is bringing in more stringent laws about phones, making it possible to prohibt their use during school hours, unless a teacher specifically wants them used for the subject being taught.
I think other countries are doing the same, and considering a minimum age below which children may not have smart-phones, tablets etc.
In our family, we have simply insisted that neither phones, tablets nor laptops are brought to the table, or in use when the family is gathered for any kind of talk.
Our DIL was surprised by this, but complied, as it was our son who told her the rules "when we are with mum and dad."