Why is the iPhone battery icon yellow?

If your iPhone has a yellow battery icon, this is not a major error, it just means your iPhone is in Low Power Mode.

This mode can help your iPhone save battery when it's low on power. However, using low power mode too often can affect the performance of your iPhone and the apps you're running.

If you want to turn off low power mode on your iPhone, you can follow the instructions below:

On your phone, go to "Settings", select "Battery", then toggle off "Low Power Mode" to turn this mode off.

Low Power Mode is a feature created by Apple to help your phone save battery when the battery is low. However, you should not turn on this mode too often because it can affect some functions of the phone such as:

- The device is prone to slowness and lag due to reduced processing speed.

- Phone access to WiFi, 3G/4G,... may be limited.

- Applications running in the background will be turned off.

- Lock screen faster than normal.

You should only use Low Power Mode when your phone's battery percentage is below 20 percent to avoid battery drain. Additionally, if your phone's battery is weak, you should also turn on this mode to avoid virtual battery and sudden drops.

Khanh Son (Synthesis)

Source: https://vtc.vn/vi-sao-bieu-tuong-pin-iphone-co-mau-vang-ar841514.html