My I phone x is showing a yellow battery, what does that mean?
My iPhone X shows that the battery is yellow in the right upper top of the iPhone. What does that mean?
iPhone XR, iOS 15
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It means that the phone is in Low Power mode. Most internal and background energy use is disabled. Low power mode will turn off automatically when the phone is charged higher than 80%, or you can go to Settings/Battery and turn it off.