Sprint will indeed offer unlimited data for the iPhone 4S, a spokesperson has confirmed. Michelle Mermelstein states that the company is not altering its smartphone data plans, which are priced between $70 and $100 a month. Previously observers had worried that Sprint would follow in the steps of AT&T and Verizon, which have imposed transfer caps on their customers to mitigate iPhone traffic. The 4S will launch with all three carriers on October 14th, following a round of pre-orders beginning on the 7th.