iPhone 15 Pro Max new vs one year later: 89% battery health!

I’ve been using the iPhone 15 Pro max as my main phone for a year, and it’s down to 89% battery health. So, how does that translate to battery life, compared with a brand new device? I tested the phone when I first got it, and again after one year.

In my battery test, Avengers is played back on a loop until the phone runs out of battery. The screen is set to full brightness, and phones are on airplane mode, with Wi-Fi and Bluetooth off. All tests are filmed with new phones that have full battery health.

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[prasantaghosh]

Iphone 16 - not now ❌️
One year later✔️

[afan]

And if you really want to make sure Apple isn’t purposely making the lower iPhones bad/lose battery, don’t touch the 2 phones, don’t update, don’t turn or let the phone be looking for signals, etc.

[afan]

I mean, you used the phone for a year and probably reduced the Maximum capacity it has (It’s in the settings app in Battery). My phone was a hand me down so the previous owner brought my maximum capacity down asf. But I’ve only lost 1% in a year cuz I can take care of my phone. And it’s currently at 84% and lasts me a whole day+ of playing COD, FC mobile, etc, watching movies and YouTube.