Sprint provides a valuable service to mobile customers that enables subscribers to block texts to and from selected numbers. The service also provides the account owner with the ability to completely block the texting service on the device. This feature is particularly useful as a tool for parents to monitor and control their children’s SMS privileges. You can also use the blocking service to stop unwanted phone callers. Both blocking features are available through the My Sprint account management site (see Resources). Tips Writer Bio

How to Block Numbers From Calling or Texting a Sprint Phone  12 Steps  - 96