Use of the battery by app is no longer visible

When my iPhone was brand new I used to see the use of the battery by app, but the small blue clock next to the "use of the battery" icon in settings/battery disappeared after a week or two. How do I get it back?

How many minutes he normally brings to see app use? It looks like half an hour is not enough.

I have the latest version of the system 9.3.4.

The first thing to try, if you have not already, is a reboot or a forced reboot:

Restart your iPhone, iPad or iPod touch - Apple Support

If this does not help, then a backup/restore may be in order:

The backup of your iPhone, iPad and iPod touch - Apple Support

Restore your iPhone, iPad or iPod touch from a backup - Apple Support

If this does not help, you may need to reset as a new device (which will lose your settings current, data, etc.):

How to clear your iOS device and then set up as a new device or restore from backups - Apple Support

Tags: iPhone

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