A federal judge has preliminarily approved a potential $500 million class action settlement with Apple Inc. over the alleged throttling of older iPhones.

The settlement, reached Feb. 28, could provide $25 to each class member, depending on how many make claims, and come after nearly two years of discovery battles, including sanctions against plaintiffs attorneys Joseph Cotchett and Mark Molumphy, of Cotchett, Pitre & Molumphy in Burlingame.