same as above - saying "Mum I've smashed my phone please WhatsApp me at a number "

The message I received addressed me as "Mum", said they had smashed their phone and gave me another number to WhatsApp - and said it was urgent.
Luckily I looked up the number and found someone else had had the same message, but was not a mum, so immediately knew it was a fake. No signature gave it away for me.

Spam. Text only msg pretending to be my kid (I don't have any) saying he/she lost phone and to text back