Sign in to www.sprint.com with a valid username and password.
Scroll down to the desired PTN or device and select Manage Plan.
On the next page, select Manage Services on the same device/PTN.
Double check to make sure you're making changes to the right PTN.
On the Service add-ons page, select TIDAL to add, or uncheck the services to be removed.
Click Save at the bottom of the screen.
Click Okay to finish up!
Wait 1-2 hours for the changes to be reflected in the online account. You will need to sign out and then sign back in to see the changes after 1-2 hours.
Changes must be made by the account holder. Once you do this, you should get a text message with a link for you to download the app and register for the promotion.
If you are an iPhone customer, you will want to turn off WiFi. iPhone users must be on the Sprint network in order to complete the TIDAL sign up process and get 6 months free.
For more information, see the TIDAL Support page and Sprint.com/TIDAL