Apple announced a new feature in IOS 18 updateIt allows users to know the time even when the iPhone battery runs out. This is extremely important for those who rely entirely on their phones to know the time, especially during work hours or even to know important appointments. This feature is familiar to Apple Watch users, but it is the first of its kind on iPhone devices. Learn about this feature and how it works.
Time display feature when the battery runs out
When your iPhone runs out of battery, it will still display the time on the screen. Along with the time, an image of an empty battery and the word “iPhone is Findable” will appear, indicating that the “Find My” service is still working. This feature is not entirely new, as previous iPhones displayed the phrase “My iPhone can be found” when the battery was very low, if you activated the Find My feature on the iPhone, but the addition of the time display is a big improvement.
The introduction of new improvements, such as the information that appears on the screen when the battery runs out, is due to the battery retaining some reserve power so that this information remains effective for up to approximately five hours after the battery runs out.
Improvements in battery charging and charging limits control
The iOS 18 update also brings other battery-related improvements, especially for the latest iPhone devices such as the iPhone 15, iPhone 15 Plus, iPhone 15 Pro, and iPhone 15 Pro Max. Also, users will be able to control charging levels in more detail, as they can now set a charging limit at 80%, 85%, 90%, and even 95% of full charge. This improvement is intended to improve long-term battery life, as it is recommended not to leave the battery fully charged for long periods. This is because leaving it fully charged for long periods can lead to deterioration of its condition due to several factors related to the chemical composition of the battery and how it operates, such as:
Chemical stress
Lithium-ion batteries, the common type in smartphones, work by moving lithium ions between the anode (positive electrode) and cathode (negative electrode) during charging and discharging. When a battery is fully charged, lithium ions are highly concentrated in the anode, causing stress to the chemicals inside the battery.
high heat
Charging the battery to 100% generates excess heat. High temperatures lead to unwanted chemical reactions inside the battery, causing corrosion of the active materials and reducing their efficiency over time.
Interaction of electrodes
When a battery is fully charged, the electrodes are more likely to interact with the electrolyte, which is the liquid or gel that helps transport ions inside the battery. These reactions can lead to the formation of unwanted compounds on the surface of the electrodes, reducing their effective capacitance.
Periodic shipping
Using the battery within a charge range between 20% and 80% reduces stress on it. Batteries that are regularly charged and discharged within this range stay in better condition over the long term than those that are continuously fully charged.
Traditional methods of charging phones relied on charging them fully and then recharging them when needed, but this method is not the best for the health of the battery in the long term, as we mentioned. Thanks to the new options in iOS 18, users will be able to set a specific charging limit based on their preferences and daily needs. The battery can be recharged to 100% only when needed, for example when traveling and charging sources cannot be found.
Take advantage of dark mode
The iOS 18 update brings a new dark look that applies to all parts of the screen, including application icons. This adjustment helps save some energy, especially on OLED displays that rely on individual pixels to light up.
Compatibility and future updates
These features include important improvements that are not available for all iPhone devices. The feature of displaying the time when the battery runs out is currently only available for iPhone 15 devices. It was tested on the iPhone 15 Pro Max and it worked successfully, but this feature did not appear on the iPhone 14 Pro Max. It is uncertain whether this feature will be limited to Pro models only, and more information is expected to be available closer to the launch date.
Warnings and recommendations
Do not update to iOS 18 now, wait for the final version in September
The iOS 18 update is currently available in a beta version for developers only, which may be unstable and negatively affect battery performance and other iPhone functions. The public beta version is expected to be launched soon, and it is preferable not to update the basic iPhone to the beta version to avoid any potential problems.
In short, iOS 18 updates come with important battery-related features and improvements, including displaying the time when the battery is running out and improving charging levels to improve battery life in the long term. However, users should be aware of the compatibility and warnings related to the current beta version to avoid any problems they may encounter.
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