If you haven’t heard, these are plans offered to employees, their friends and family and occasionally to the public. They are much cheaper than a regular plan.
Information can be found:
Treo Central Thread on SERO
How to get the best cell phone plan in the land
Sprint Users, How to obtain SERO
*May 23, 2007
More tips on getting Sprint SERO from Treo Central Forums
*Feb. 7, 2007
Sprint SERO Open to Everyone (Again)
*Feb. 22, 2007
Howard Forums Sero thread
Check the Sprint user forums for more up to date codes and tips on getting a SERO plan.