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A comment on IPhones start slowing down after a year. Parent comment

Re:IPhones start slowing down after a year by codazoda on Thursday December 21, 2017 @12:05PM (#15980572)
If replacing the battery restores normal performance, can connecting a charger also restore normal performance?

Because iPhones don't really have user serviceable batteries, I wonder if an after market battery charging case would provide more speed with a new battery pack.

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Re:IPhones start slowing down after a year by jtbayly on Thursday December 21, 2017 @12:33PM (#15980814)
No. Plugging it in makes no difference. The only way performance increases is if you increase the charge in the battery, in my experience.
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Re:IPhones start slowing down after a year by jmull on Thursday December 21, 2017 @12:38PM (#15980864)
From what I've been able to tell, plugging the phone in helps in some cases but there are a lot of cases where it does not help.

(That's from reading around on the internets. I only have direct knowledge of my own situation, where plugging my phone in did not help but replacing the battery did.)

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