Hi there, does anyone know why specific phones don't seem to receive txts from other specific phones?  I've come across it with a couple of phones lately.  My mother doesn't get txts from me, but if I take her sim out of her huckery burner phone and put it in my spare Sony Ericsson txts work perfectly.  Swap it back and txts are once again one way.

Likewise my son doesn't get txts from him mother (Iphone 5 to Samsung Galaxy Young).

I've tried to sell this as feature, but apparently mothers want to have conversations.