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PARIS, FRANCE - DECEMBER 23: In this photo illustration a woman holds an Apple mobile phone iPhone 5 on the screen of which we can see the battery charge indicator on December 23, 2017 in Paris, France. Apple has admitted that it was clamping the processors of old iPhone at certain stages of their life cycles, to deliberately slow down the performance of batteries of older models of iPhone. (Photo by Chesnot/Getty Images)

PARIS, FRANCE - DECEMBER 23:  In this photo illustration a woman holds an Apple mobile phone iPhone 5 on the screen of which we can see the battery charge indicator on December 23, 2017 in Paris, France. Apple has admitted that it was clamping the processors of old iPhone at certain stages of their life cycles, to deliberately slow down the performance of batteries of older models of iPhone.  (Photo by Chesnot/Getty Images)

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A lithium-ion battery sits inside a smartphone sold as an Apple Inc. iPhone 4S in an arranged photograph in Hong Kong, China, on Saturday, Jan. 11, 2014. Apple Inc.'s iOS smartphone operating system gained ground in the U.S. in the final quarter of 2013 as the share of the market served by the platforms of Google Inc., Microsoft Corp. and BlackBerry Ltd. shrank. Photographer: Brent Lewin/Bloomberg via Getty Images

A lithium-ion battery sits inside a smartphone sold as an Apple Inc. iPhone 4S in an arranged photograph in Hong Kong, China, on Saturday, Jan. 11, 2014. Apple Inc.'s iOS smartphone operating system gained ground in the U.S. in the final quarter of 2013 as the share of the market served by the platforms of Google Inc., Microsoft Corp. and BlackBerry Ltd. shrank. Photographer: Brent Lewin/Bloomberg via Getty Images

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Generic stock photo shows an iPhone smartphone displaying a low battery icon. (Photo by Dominic Lipinski/PA Images via Getty Images)

Generic stock photo shows an iPhone smartphone displaying a low battery icon.   (Photo by Dominic Lipinski/PA Images via Getty Images)

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NEW YORK, NY - SEPTEMBER 16: People buy the new iPhone's at an Apple store in Manhattan on September 16, 2016 in New York City. People around the globe waited in long lines to be among the first to purchase both the iPhone 7 and the iPhone 7 Plus. The phones offer longer battery life, faster browsing, a better camera and do not have a traditional headphone jack. (Photo by Spencer Platt/Getty Images)

NEW YORK, NY - SEPTEMBER 16:  People buy the new iPhone's at an Apple store in Manhattan on September 16, 2016 in New York City. People around the globe waited in long lines to be among the first to purchase both the iPhone 7 and the iPhone 7 Plus. The phones offer longer battery life, faster browsing, a better camera and do not have a traditional headphone jack.  (Photo by Spencer Platt/Getty Images)

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Generic stock photo shows an iPhone smartphone displaying a low battery warning. (Photo by Dominic Lipinski/PA Images via Getty Images)

Generic stock photo shows an iPhone smartphone displaying a low battery warning.   (Photo by Dominic Lipinski/PA Images via Getty Images)