Why the color of battery icon is yellow on my iPhone?

Most of the iPhone user may encounter with this problem. Since whenever your battery goes below 20 %, a pop-up menu appears and asks for activating "Low Power Mode". At first, you find this proposal logical and activate "Low Power Mode".

Figure: Low Battery pop-up window appears

When this pop-up window appeared, color of the battery icon is red. If you choose Low Power Mode on the screen, then color of the battery icon will be yellow.

The scenario goes like this:
1- Battery level goes below 20% and a pop-up appears asking for "Low Power Mode"
2- You activate "Low Power Mode"
3- You plug in your phone to charge it.
4- You are in hurry or you do not have time and you plug out your phone before 80 % level.
5- After a while you recognized that color of battery icon is yellow!!! "OMG there is a problem with my battery".

Since color red means "WARNING", color yellow means "CAUTION" and color white means "ADVISORY" in general use, you will be naturally cautious about this yellow sign. But, don't worry. You are at the right place for the solution. Yellow battery icon is not a bug/failure but a feature of iOS.

Open "Settings" App by tapping on it.

Tap on "Battery"

Switch off "Low Power Mode".

As you see in the below picture, Low Power Mode is ON and color of the batter icon is YELLOW.

Switch off Low Power Mode, then you will see that color of battery icon is no more yellow as shown in below picture.

In the scenario mentioned early in this post, if you wouldn't perform 4th step (do not plug out before battery level is 80 %) you would have never seen the yellow battery icon. Since, after 80% battery level, Low Power Mode is automatically switched off by iOS. For more information on Apple's own page, please click here.

NOTE: iOS 10.1.1 is used throughout the steps of this post.

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