Currently, the vast majority of mobile phones choose to include a notch in their design, even can use the notch of these terminals as a battery indicator .
To be able to use the notch as a battery indicator you have to install Notch Battery Bar , an application that at the moment is only compatible with the Huawei P20 and OnePlus 6. The app uses the Live Wallpaper function to modify the wallpaper as it goes changing the battery level of the terminal.
Change the color according to the battery level
To indicate the level of the battery, around the notch a colored bar appears that indicates how much battery the terminal has at each moment. If the level goes down, the color changes and the extension of the bar decreases, so that the user can easily notice the level of life remaining for the terminal’s battery.
For example, with the battery at 99% the bar surrounds the entire notch and is green , while 55% occupies half the space and changes to yellow . When the terminal battery is charging, the indicator turns blue .
The application has a free version and another payment . The developer of the same recommends to try the free version first to see the possibilities it offers, although it is more limited. However, the payment option, which costs almost 1 euro, allows you to change the wallpaper the user wants while the other version only offers a single wallpaper.
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