With the iPhone 15, Apple made numerous changes to the software to improve battery life. Ultimately, battery performance has always been a stumbling block for users and the iPhone 15 Pro/Max also has always-on as standard, like the iPhone 14 Pro/Max – so the display is always more or less active.
First of all, it should be said that battery consumption is definitely measurable according to independent analyses. The ATO OLED panel can lower the frequency to 1 Hertz, but in the end it doesn't come for free. Logically, the option with a background image is the worst option and if you don't want to do without it, you should use always-on without a background image.
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All the better that Apple is now saying that the measures to improve the lifespan of the battery should take effect. Since the iPhone series traditionally does not have the largest batteries, the result is correspondingly more charging cycles and features such as always-on exacerbate this. The iPhone 15 Pro, for example, has a Li-Ion battery with 3,274 mAh. The iPhone 12 Pro had a comparative value of 2,815 mAh. Apple has increased the capacity slightly with each generation, but has also introduced new charging features with the iPhone 15 Pro.
Exceeded expectations twice
When Apple released the iPhone 15, it said that the batteries still had 80% remaining power after 500 charging cycles. However, there is now data that suggests that the iPhone can even manage 1,000 charging cycles until 80 percent remaining capacity is reached. This is the result of improvements to the batteries on the one hand, but also to the charging management.
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Charging cycles of Apple devices can be read using additional software. At the factory, Apple shows a percentage value with the remaining capacity, at least for the iPhone; But this no longer exists with iPads. Appropriate tools can help here. If you want to get the most out of your iPhone battery, you should use complete charging cycles if possible and use the limit of 80 percent maximum charge, which unfortunately only exists for the iPhone 15 at the moment.
With iOS 17.4, additional features will be added to the battery settings to make it easier to conserve the battery as much as possible. However, it has not yet been confirmed which models this will come for. In general, you have to assume that it will remain the iPhone 15.