General Questions

• What is Yahoo! Messenger for SMS?
• How much does it cost to use Yahoo! Messenger for SMS?
• Do I need a data plan to use Yahoo! Messenger for SMS?
• In which countries is Yahoo! Messenger for SMS available, and what is the shortcode for my operator?

Getting Started

• How do I set up Yahoo! Messenger for SMS?
• Do I need to download Yahoo! Messenger on my phone to get Yahoo! Messenger for SMS?
• Do I need to enter my country code when I register my mobile number for Yahoo! Messenger for SMS?

How do I...

• How do I use the commands for Yahoo! Messenger for SMS?
• How do I change the mobile number I have registered for Yahoo! Messenger for SMS?

Troubleshooting

• I did not receive a confirmation when I signed into Yahoo! Messenger for SMS or when I signed out. Why?