If you select this feature, and have SMS service from one of the supported Carriers (T-Mobile®, Verizon Wireless, AT&T, Sprint, Nextel, Boost, U.S. Cellular®, MetroPCS, Cellular One Dobson and Cricket), you will receive periodic Alerts regarding selected service and/or promotional notifications that will be sent to the mobile phone number that you provided when you enrolled, combined with your handheld's text messaging capabilities. T-mobile is not liable for delayed or undelivered messages. Message & data rates may apply. You can expect approximately 20 messages per month for each account; actual message frequency varies based on your selected options.If you change your mobile phone Service Provider, the service may be deactivated and you will need to re-enroll in the notification service. TXU Energy reserves the right to cancel the notification service at any time; you may cancel (Opt Out) the service by just texting the word "STOP" to: 41984 from your mobile phone or editing your online profile on TXU.com. For more information, please text the word “HELP” to: 41984 or call 800-818-6132. Participating in the SMS notification service does not replace other forms of selected TXU Energy notifications.