The American technology giant has recently faced severe criticism after it emerged that it had been purposefully slowing its handsets, but Cook has responded to that situation by revealing that the next update to iOS 11 will give iPhone consumers a choice of how their handset performs.
Speaking to the ABC network, Cook explained: "We will tell somebody we're slightly reducing, or we're reducing your performance by some amount in order to not have an unexpected restart. If you don't want it? You can turn it off.
"Now, we don't recommend it, because we think people's iPhones are really important to them, and you never can tell when something is so urgent."
Last month, Apple admitted to slowing down iPhones with older batteries, which prompted widespread criticism of the world-famous brand.
Apple apologised for the situation and also insisted that its ambition was to "make iPhones last as long as possible".
The company said: "We have never - and would never - do anything to intentionally shorten the life of any Apple product, or degrade the user experience to drive customer upgrades."
Despite this, it was recently reported that Apple is now facing questions from the US Senate over its practice of slowing down iPhones.
Chair of the Senate commerce committee, Senator John Thune, has apparently sent a letter to Cook about the issue.
Thune said, according to the Wall Street Journal newspaper: "Apple's proposed solutions have prompted additional criticism from some customers, particularly its decision not to provide free replacement batteries."