The yellow battery icon on your device, particularly if it's an iPhone, indicates that the device is in Low Power Mode. This mode is automatically activated when the battery level drops to around 20% to help conserve power by reducing various functions such as screen brightness, background app refresh, and system performance. The yellow color primarily serves as a visual cue that the phone is trying to extend battery life by using less power. If the battery icon remains yellow when the battery is charged above 20%, it may mean that Low Power Mode has been manually enabled or there could be some software glitches. You can disable Low Power Mode by going to Settings > Battery and turning off Low Power Mode to restore the normal green battery icon. This feature helps preserve battery health and can sometimes be turned on inadvertently by tapping the icon in the Control Center. In summary, a yellow battery icon means your phone is in Low Power Mode for battery conservation, and you can turn this mode off manually if you prefer your phone to operate normally with full power use.
