I am not receiving messages that are autogenerated (from Amazon showing delivery status or a compamy sending a pin code). I am receiving all other messages that are generated by a person. This just only started happening about two weeks ago. I have my phone set to cellular data off and roaming off, which is what I always had it set to before and received all the messages. Can any one help with this? I don't need to call using my I-phone 5s so I have disabled roaming.