Sending and Receiving Text Messages with the Cell Phone Card.
To send and receive text messages, use the Phone Dial Pad or store the PHONE SEND TEXT MESSAGES and PHONE TEXT MESSAGES tools on your overlay or under icon sequences.
To Send a Text Message
1. On the Dial Pad, select the number of the person you want to send a text message to. Then select the Send Text Message key . 
2. You see the Spelling overlay.
If you did not type in a number from the Dial Pad, the display will show Phone Number/Address. Enter the number and select OK. (Ignore the "Address" part. You cannot enter an address at this time.)
Enter the message you want to send. You can use the Spelling overlay or you can go to your CORE overlay by selecting the Go to Core key on the Spelling overlay.
3. Select OK when you have finished.
4. A yellow message box tells you when your message has been sent.
Reading a Text Message
When you receive a text message, an icon of a small white envelope 
will appear in the Status Display Area of your device screen near the other phone icons.
To Read a Text Message
1. Select the Text Messages key 
on the Phone Dial Pad.
2. You see a screen that shows you any new text messages and all your saved text messages.
The keys display the first few words of the message stored under them.
3. Select the key that contains the message you want to read.
4. The whole message is displayed.
5. You can Reply to the message; Delete the message; or select Cancel to save the message.
IMPORTANT NOTE: Even with advanced technology, there are a very limited number of phones available that are capable of sending text messages using a Bluetooth signal. Compatible phones available by Sony Ericsson: W580, W350, W760a, W518a, Equinox TM717, and Motorola Moto z9n. These phones were tested using A T & T and/or T-Mobile wireless support which is GSM network. Due to rapidly changing technology and phone models, the phones listed may have been discontinued since this article was posted. Before purchasing a new phone, take your device with you to your service provider for a list of available phones and try them out to insure compatibility.
Listing of specific phones and service providers is intended to help PRC customers find a compatible phone. PRC cannot provide support or instruction on cell phones or their use with AAC devices. PRC is not responsible for incompatible phones or signed phone contracts.