Oppo
Show or Hide Battery Percentage in Status Bar auf Oppo
The battery icon in the status bar only shows a rough charge level. Coloros represents the remaining capacity as a shrinking shape, which makes it hard to judge whether you have 60 percent or 30 percent left at a glance.
The exact number is controlled by a separate toggle inside the notification settings. It's turned off by default on most Oppo phones running Coloros, which is why the icon looks the same across a wide range of charge levels.
To turn it on, go to Settings ➔ Notifications & status bar ➔ enable Battery percentage. Once active, the number appears next to or inside the battery icon, depending on the icon style you use.
This setting has no effect on battery life or charging speed. It only changes what's displayed in the status bar.
If the number still doesn't show up after enabling it, check whether a third-party icon pack or launcher is overriding the status bar. In that case, the system setting is active, but the visual style comes from another app.