Starting on July 13 the super cheap Sprint SERO plans will rise significantly in price. Instead of being able to get a $30 entry level plan that includes pretty much everything (EVDO Rev A, SMS, MMS, M2M, 7pm NW) plus 500 voice minutes - you’ll have to pay at least $59. This is apparently confirmed by Sprint eCare messages. Also new is a requirement that SERO subscribers supply the last four digits of the referring Sprint employee number. So the widely used “savings@sprintemi.com” probably won’t work as a referral any longer. Looks like SERO just got a lot less popular. If you are thinking about one of these plans — you have until 7/12 to get on board.

“The current SERO plan will expire on July 12, 2008. So, if you wish to apply for a SERO plan, then please log in at www.sprint.com/sero and activate a new phone number with the SERO plan.

After the services has been activated under the SERO plan, you can contact us at 1-888-211-4727 from a landline phone at any point of time so that we can start porting your old number to replace the new Sprint phone number.”

New SERO plans via HOFO