This is so wrong. Effectively, researchers have discovered that they can make ring tones that only children can hear. This is allowing kids to have phones ring without adults ever knowing anything is going on. It is not fair that we get old, and now kids are learning to take advantage of it.
I just tried it with my friend Frank. He says he can hear a high constant pitch. I hear nothing, but my head is starting to hurt. Maybe this is why B gets headaches.