I don't mean 999, I mean one where you can program in one number, say, (probably MY mobile!) that a DC can still call (reverse obviously) in an emergency if the phone has run out of credit.
DS1 will be walking the 200m to and from a new primary school in Y6 next year. I need for him to be able to have contact with me esp as he will be home alone for 20 mins whilst I fetch DS2.
Thanks