I'm happy with the lack of numeric battery % (during Sleep and in the system menu) when not charging. People tend to obsess over that number to no benefit, and maybe it's hard to make it precise. When charging is the time it's useful.
But for development purposes—tracking down how efficient an app is—a number while not charging can be a big help! So I render .getBatteryPercentage()
to the screen or system menu manually during certain tests.
But it might be nice just to have that number always available in Settings. I can think of three ways that might be done:
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Display the number at the top right of the System menu within Settings
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Or an actual toggle (like on iPhone) to display the number always (in sleep and system menu)
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Or bury the number in Device Info along with the IP address etc. (but that would be pretty buried for devs)