My mother has always insisted that I have a cell phone with text capability. She says that she's heard that sometimes when cell phone service is not available, people will still be able to send text messages. I believe she's thinking that after a natural disaster, like an earthquake, all the phone circuits will be busy with frantic phone calls, but I will still be able to get a text message to her. Is there any truth to that? As far as I know, the text data will be traveling across the same circuits as voice data.