Commands for text messages:

• Block a user: block Yahoo! ID
• Block everybody: block all
• Unblock a user: unblock Yahoo! ID
• Unblock everybody: unblock all
• Reset a user: reset Yahoo! ID

Send the command from your mobile phone to the following supported wireless carriers:

• All U.S. Supported Wireless Carriers - 92466
• All India Supported Wireless Carriers - 8242
• TMTouch - 17776
• Singtel - 428801
• AIS - 83140
• DTAC - 192466600
• Globe - 2258800
• SMART - 258600
• Telkomsel - 4246000