iOS 18 beta can detect when your phone is charging too slowly — but it may need some work
It won't make your phone charge faster, but at least you'll know about it
Here at Tom’s Guide our expert editors are committed to bringing you the best news, reviews and guides to help you stay informed and ahead of the curve!
You are now subscribed
Your newsletter sign-up was successful
Want to add more newsletters?
Daily (Mon-Sun)
Tom's Guide Daily
Sign up to get the latest updates on all of your favorite content! From cutting-edge tech news and the hottest streaming buzz to unbeatable deals on the best products and in-depth reviews, we’ve got you covered.
Weekly on Thursday
Tom's AI Guide
Be AI savvy with your weekly newsletter summing up all the biggest AI news you need to know. Plus, analysis from our AI editor and tips on how to use the latest AI tools!
Weekly on Friday
Tom's iGuide
Unlock the vast world of Apple news straight to your inbox. With coverage on everything from exciting product launches to essential software updates, this is your go-to source for the latest updates on all the best Apple content.
Weekly on Monday
Tom's Streaming Guide
Our weekly newsletter is expertly crafted to immerse you in the world of streaming. Stay updated on the latest releases and our top recommendations across your favorite streaming platforms.
Join the club
Get full access to premium articles, exclusive features and a growing list of member rewards.
There’s nothing more infuriating than those times you’re in a hurry and find your phone charging much more slowly than you’d like. Well, except maybe people driving slowly for no good reason, but that’s a whole other story.
Fortunately the battery thing may not be a problem with iOS 18, since it’ll show you if you’ve been using a slow charger.
As spotted on Reddit, the iOS 18 developer beta has started using more colors in the battery settings menu. And if you’ve been plugging into a slow charger, Apple will display this in orange instead of the usual green, with the label “Slow Charger”.
It was also claimed that the Slow Charger flag was trying to link to a support article that doesn’t exist. Suggesting that Apple may publish that page at some point in the future, possibly once the iOS 18 public beta launches.
What isn’t clear is what Apple considers “slow” in this case. The redditor in question was using a 5W charger at the time, which we can all agree is a pretty slow charging speed. But where’s the cut off point? 10W seems like a good place to start, but even that’s considerably slower than the fastest charging speeds iPhones can offer. The iPhone 15 peaks out at 20W charging speed while the iPhone 15 Pro Max can reach as high as 27W. MagSafe and Qi2 wireless charging go as high as 15W.
This feature could potentially be very useful, though. Especially if Apple can offer some information on why a phone might be charging slower than you’d like. It’s not always because you’re using a low-powered charger, after all. Things like temperature, battery level and charging optimization software can all play a part in the speeds you get.
It would also be better if iOS 18 can alert you about slow charging speeds without forcing you to dive into the battery settings menu. Though this is probably a good start, assuming it works as intended. This is beta software, after all, and nothing is guaranteed.
Get instant access to breaking news, the hottest reviews, great deals and helpful tips.
More from Tom's Guide
- watchOS 11 — 5 awesome Apple Watch features that weren't mentioned at WWDC
- iOS 18 has me excited for AI in a way I never expected
- macOS Sequoia — 7 things you need to know about iPhone Mirroring

Tom is the Tom's Guide's UK Phones Editor, tackling the latest smartphone news and vocally expressing his opinions about upcoming features or changes. It's long way from his days as editor of Gizmodo UK, when pretty much everything was on the table. He’s usually found trying to squeeze another giant Lego set onto the shelf, draining very large cups of coffee, or complaining about how terrible his Smart TV is.










