On iPhone 15 models, iOS 18 will recommend that users set a particular charging limit for their device based on their recent usage habits, with the aim of potentially improving their iPhone battery's lifespan by reducing the time that the battery is fully charged.
All four iPhone 15 models feature a setting that prevents the devices from charging beyond 80% while toggled on, and iOS 18 expands the feature by adding new 85%, 90%, and 95% charging limit options. With the new limit options, iOS 18 now takes a proactive approach to improving battery longevity by recommending a specific charging limit to users via a notification.
The recommendation also appears in the Settings app under Battery → Charging. The charging limit feature remains exclusive to the iPhone 15 lineup on the first iOS 18 beta, with the option not found on the iPhone 14 Pro or older.
In a related change, anecdotal reports suggest that iOS 18 could be recalibrating some devices' maximum battery capacity percentage. In Settings ➝ Battery ➝ Battery Health, "Maximum Capacity" is a measure of battery capacity relative to when the device was new. Lower capacity can result in fewer hours of usage between charges.
The first iOS 18 beta is available for Apple Developer Program members, and a public beta will follow in July. After beta testing is complete, the update should be widely released to all users with an iPhone XS or newer in September.
Friday January 17, 2025 2:42 pm PST by Joe Rossignol
iOS 19 is still around six months away from being announced, but a new leak has allegedly revealed a completely redesigned Camera app.
Based on footage it obtained, YouTube channel Front Page Tech shared a video showing what the new Camera app will apparently look like, with the key change being translucent menus for camera controls. Overall, the design of these menus looks similar to...
Thursday January 16, 2025 6:45 am PST by Joe Rossignol
Apple today adjusted estimated trade-in values for select iPhone, iPad, Mac, and Apple Watch models in the U.S., according to its website.
Some values increased, while others decreased. The changes were not too significant, with most values rising or dropping by $5 to $50.
We have outlined some examples below:
Device
New Value
Old Value
iPhone 15 Pro Max
Up to $630
U ...
Sunday January 19, 2025 6:58 am PST by Joe Rossignol
Apple on late Saturday removed TikTok from the App Store in the U.S., and it has now explained why it was required to take this action.
Last year, the U.S. passed a law that required Chinese company ByteDance to divest its ownership of TikTok due to potential national security risks, or else the platform would be banned. That law went into effect today, and companies like Apple and Google...
Thursday January 16, 2025 12:39 pm PST by Juli Clover
Apple provided the third beta of iOS 18.3 to developers today, and while the betas have so far been light on new features, the third beta makes some major changes to Notification Summaries and also tweaks a few other features.
Notification Summary Changes
Apple made multiple changes to Notification Summaries in response to complaints about inaccurate summaries of news headlines.
For...
Saturday January 18, 2025 10:28 am PST by Joe Rossignol
iOS 19 will not drop support for any iPhone models, according to French website iPhoneSoft.fr.
The report cited a source who said iOS 19 will be compatible with any iPhone that can run iOS 18, which would mean the following models:
iPhone 16
iPhone 16 Plus
iPhone 16 Pro
iPhone 16 Pro Max
iPhone 15
iPhone 15 Plus
iPhone 15 Pro
iPhone 15 Pro Max
iPhone 14
iPhon...
Friday January 17, 2025 3:38 pm PST by Juli Clover
For the last several months, we've been hearing rumors about a redesigned version of the iPhone 17 that Apple might call the iPhone 17 "Air," or something along those lines. It's going to replace the iPhone 17 Plus as Apple's fourth iPhone option, and it will be offered alongside the iPhone 17, iPhone 17 Pro, and iPhone 17 Pro Max.
We know the iPhone 17 Air is going to be super slim, but...
Sunday January 19, 2025 6:02 am PST by Joe Rossignol
Apple plans to expand the iPhone's redesigned Mail app to the Mac starting with macOS 15.4, according to Bloomberg's Mark Gurman.
The first macOS 15.4 beta should be made available in the coming weeks, and Apple has previously suggested that the iOS 18.4, iPadOS 18.4, and macOS 15.4 series of software updates will be released to the public in April.
The revamped Mail app debuted on all...
Sunday January 19, 2025 8:25 am PST by Joe Rossignol
In September, Apple said that it would be launching Powerbeats Pro 2 in 2025, and it appears the wireless earbuds are coming very soon.
Powerbeats Pro 2 images found in iOS 18 code
In his Power On newsletter today, Bloomberg's Mark Gurman said the Powerbeats Pro 2 are "due imminently." In addition to Apple filing the Powerbeats Pro 2 in regulatory databases last month, Gurman said Apple is...
They’re getting to a point where people can hold onto their iPhones for 10 years. If I’m a shareholder, I’m asking what Tim is doing to replace the lost revenue from iPhone users who aren’t upgrading?
I charge my phone overnight, to 100%, every day ... don't care about battery health/lifespan. Its a consumable, when it doesn't meet my needs anymore it gets replaced
You're reducing the accumulation/creation of dendrites.
Dendrites are crystal-like formations in the cell that grow through the electrolyte, little by little, with each charge and discharge cycle. They cause short-circuit in a cell when they grow all the way through. This is the main way a li-ion cell dies.
Dendrites are formed primarily during deep charging and deep discharging. E.g., when you discharge the battery down to 0%, and when you charge the battery up to 100%. If you stay within the 20%-80% charge range all the time, a modern lithium ion cell can last probably 10x as many cycles compared to a battery that is cycled between 0% and 100%. But staying in that narrow range sacrifices 40% of the battery capacity, so it's pretty undesirable. Indeed, everything about battery design is balancing competing interests and picking 2 of 3 options.
Most battery controllers don't let you go to 0% anyway. When your phone is reporting 0%, it likely really means the battery has 1-3% left but for self-preservation it's not going to let the device turn on in that state. And most folks don't discharge their phone all the way daily anyway - it's a rare occurrence to be plugging in a totally dead phone. But most battery controllers let the battery charge to 100%. So dendrites slowly form.
By limiting the charging to 80%, you're greatly reducing/slowing the formation of dendrites.
But 80% is a bit aggressive in my opinion. Dendrite formation becomes a real problem at the extremes. 90-95% charge limit would be fine I think.
This is looking more and more like something in the hardware of the iPhone 15 models that allows the charging limits as well as this new feature. Maybe something controlling the USB C port or the battery controller itself?
All existing devices since iPhone 6S can do Optimized Battery Charging, which delays charging past 80%. All iPhones can pause charging when high temps are experienced. So we already know existing hardware is capable. This is confirmed by the fact jailbreaking can re-enable this artificially locked feature on iPhone 14 and older. This is a case of pure feature rationing.
