In my country if you had no credit at all, for some reason you could still dial for long enough that the person recieved a brief blip and a missed call. That wa

In my country if you had no credit at all, for some reason you could still dial for long enough that the person recieved a brief blip and a missed call. That was invaluable as a teenager as if I was stuck I could blip my parents and they could call back properly.