The lawsuit is the third to be filed since the privacy controversy started last week.
Handset makers and carriers scramble to explain the tracking software on some devices, while Congress demands details.
As Sprint upgrades to LTE from 4G WiMax, the move is expected to strain the carrier's network and unlimited data plans don't help.
If we don't actively protect our own data, does it matter if big businesses sell our personal details?
Sprint updates developers on its 2012 plans for phone and tablet technologies.
Cooperation between Sprint Nextel and Clearwire on LTE should help to bring two versions of that technology together.
Only smartphone users will continue to get the Now Network's unlimited data plan.
Sprint Nextel is ending unlimited data plans for all devices except smartphones, bringing the era of all-you-can-eat mobile data in the U.S. nearer to a close.