5 myths about iPhone battery life you might mistakenly believe â and what you should do instead (AAPL)
There was a minor scandal last year when it was discovered that Apple sometimes reduced the power to iPhone processors with old and spent batteries.
Basically, Apple did make some iPhones appear to run slower. It fixed the issue in a software update and offered $29 replacement batteries to users.
But just because you can get a battery for $29 doesn't mean it will solve all your battery life issues. For some people, it could. But if you go to an Apple store and the technician said your battery seems fine, it probably is.
"I would say less than 10% of the phones we have ordered batteries for actually need a battery, based on diagnostics," a Genius at a Midwestern Apple store told Business Insider earlier this year.
To check if your battery needs a replacement, go to Settings > Battery > Battery Health (Beta).
If you don't see it, you probably need to update your iPhone software.
If your "maximum capacity" is under 80%, you might want to change it. Otherwise, if you're only missing a few percentage points, you can probably wait.
