Yahoo SMS Terms of Service
You will get SMS messages from Yahoo in response to your one-time request, or in response to a subscription (like “account notifications,” where you will receive an SMS each time that there are modifications to your account details). Message & data rates may apply.
Yahoo’s terms and conditions at https://policies.yahoo.com/us/en/yahoo/terms/utos/index.html also apply.
For more information, text HELP to 92500. To stop receiving account notifications, reply STOP to 92500.
Yahoo supports this SMS service on the following carriers:
Alltel, AT&T, Boost, Cellular One / Dobson, Cincinnati Bell, Nextel, Sprint, TMO, US Cellular, Verizon Wireless, Virgin, ACS Wireless, Appalachian Wireless, Bluegrass Cellular, Centennial Wireless, GCI Communications, Illinois Valley Cellular, Immix Wireless, Inland Cellular, Nex-Tech Wireless, Revol Wireless, Thumb Cellular, Unicel, United Wireless, West Central Wireless, Cellcom, Cellular South, nTelos Wireless.