When the iPhone is disconnected and holds a satisfactory battery charge, the battery icon displayed at the upper-right corner of the device’s screen typically appears white.
If configured, this icon may also exhibit the battery percentage. However, a red-colored icon denotes a critical battery level, signifying that the iPhone’s charge has dropped below 20%. Immediate charging is advised to prevent an eventual complete device shutdown.
During the charging process, the icon transitions to green, indicating an influx of power. Yet, what is the significance of a yellow battery icon?
Interestingly, a yellow battery symbol adorning your iPhone’s status bar shouldn’t cause alarm. This icon merely signifies the activation of Low Power Mode on your device. With this feature activated, the iPhone’s battery life is extended by temporarily restraining or modifying certain power-intensive functions.
For example, iPhone 12 models might disable 5G connectivity, while iPhone 13 versions equipped with a ProMotion display may experience a reduction in display refresh rate. For other iPhone iterations, activities like background app refresh, automatic downloads, and email fetching are momentarily suspended.
iCloud Photos might be temporarily paused, and visual animations and screen brightness could be toned down. Consequently, when operating in Low Power Mode, specific iPhone tasks might exhibit slower performance due to a reduction in overall processor speed.
By default, the Low Power Mode switch on the iPhone is set to off. To trigger the appearance of the yellow battery status icon, this feature must be manually activated through the device’s settings, or it might inadvertently be turned on.
In some instances, when the iPhone’s battery level dips to 20% or lower, an on-screen notification might offer the choice to enable this battery-conserving mode.
