It’s common sense, so maybe it’s why Apple has taken decades to say this — updating your operating system will cause short-term battery drain and heat excursions, and sometimes, battery life will fall because of additions to the operating system demanding more from your device.
iOS 26 is here
On Monday, Apple rolled out the next wave of operating systems for all your Apple devices. And, like with every big release, we’re here to remind you that it’s not the end of the world.
First and foremost, if your iPhone feels a little sluggish right after installing iOS 26, don’t panic. There’s a huge amount of indexing, updating, and tweaking going on in the background.
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