Discover why your iPhone 15 is lagging and explore diagnostic tools that can identify issues. Learn actionable fixes from storage optimization to battery management that can revive your device's performance.

From Columbia University alumni built in San Francisco
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From Columbia University alumni built in San Francisco

**Lena:** Hey Miles, I was just about to text you! My iPhone 15 has been driving me crazy lately. It's taking forever to open apps, and sometimes they don't open at all. I've deleted photos, cleared space... nothing helps. Is my phone just getting old already?
**Miles:** Oh no, that's so frustrating! You know, you're definitely not alone with this problem. Apple actually paid $113 million to settle allegations that they were slowing down older iPhones a few years back.
**Lena:** Wait, seriously? So they're deliberately making our phones slower?
**Miles:** Well, Apple denied it was intentional. They said it was an unintended consequence of preserving aging batteries. But regardless of why it happens, a sluggish iPhone is incredibly annoying, especially considering how much time we spend on our phones—about four and a half hours daily for the average person!
**Lena:** That's a lot of time to be waiting for apps to open! So what's actually causing my iPhone to slow down? Is there anything I can do besides buying a new one?
**Miles:** There are actually several potential causes, from storage issues to outdated iOS versions. The good news is there are quite a few solutions we can try before you need to think about replacing your phone. Let's dive into the most common reasons iPhones slow down and the simple fixes that could get yours running smoothly again.