How to Send an SMS Through a Serial Port Using a Nokia 1112

1. Attach on end of the serial cable to your computer. It plugs into your computer's serial port, which is on the back of your computer tower. (The serial port is typically blue and rectangular.) Screw in the knobs on the plug until they tighten.
2. Plug the other end of the serial cable into your cell phone. Download the USB GSM Modem Quick Start. Save the file to your desktop.
3. Double-click the file. Follow the installation instructions. Install the software to your computer's hard drive.
4. Double-click the software's icon. Wait for it to detect your Nokia phone. Look for the message 'OK,' which means the software detects a connection.
5. Enter 'AT+CSCA= 'XXXXX'. Replace the Xs with your mobile number. Enter 'AT+CMGS='YYYYY'. Replace the Ys with your recipient's number.
6. Enter your message. Type 'Ctrl'+'Z' to send your message.