Sprint Offers Guarantee for Unlimited Wireless Service

Sprint, fresh from a takeover by Japan’s SoftBank, introduced new unlimited service plans, an effort to tout the mobile-phone carrier as a lower-cost alternative to Verizon Wireless and AT&T.

The new Sprint Unlimited Guarantee assures customers that they will have unlimited calls, texting and data use for as long as they have their phone lines. The idea is to stand out from the carrier’s larger U.S. rivals, which are switching to tiered plans -- where customers pay more when they use more data. The new program provides an early glimpse at Sprint’s strategy under the control of SoftBank. The new pledge is also aimed at competing with rivals offering data share plans that allow families and multiple devices to ride on one account, said Roger Entner, an analyst at Recon Analytics in Dedham, Massachusetts. The new Unlimited package starts at $80 a month. Within it, there are two plans called My Way and My All-In. With the My Way program, customers get unlimited data and can add an extra smartphone for $30 a month or an extra regular phone for $10 a month. With the All-In plan, subscribers get unlimited talk, text and data, as well as 5 gigabytes of mobile hot-spot use for $110.