The new plans will carry new branding, meaning Sprint will phase out the "Framily Plan" -- for family and friends -- branding in which it has invested heavily.
Customers with Framily Plans can continue their service or sign up for a new shared plan, which in many cases would mean a less expensive bill or additional data. Spokeswoman Kristin Wallace said the company would no longer allow the option of separate bills for lines on a shared plan -- ideal for friends sharing a single plan.
Instead, the new plans will be known as "Sprint Family Share Pack."
Sprint promised that new single-line plans would be announced later in the week.
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CEO Marcelo Claure said the company would reimburse customers for the costs of switching from other carriers, such as cancellation fees.
Sprint also announced additional, limited-time discounts, such as a free additional 2GB of data per line each month.