Huawei Mate 9 - Manual (Page 160)

Configure filter rules
Configure filter notifications
Messages from strangers that contain
blacklisted keywords will be blocked
Calls and messages from blacklisted
numbers will be blocked
Calls and messages from whitelisted
numbers will not be blocked
Battery management
Viewing battery usage statistics
Use Phone Manager to view detailed battery usage statistics for each app.
Open Phone Manager. Touch remaining and swipe up on the screen. You can:
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Touch Battery usage details to view detailed battery usage statistics.
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Touch Consumption level to see which phone hardware and software is using the most
power.
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Touch Optimize to check for power consumption problems and optimize performance.
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Switch on Remaining battery percentage to display the remaining battery perecentage in the
status bar.
Reducing power consumption
Use Phone Manager to optimize performance and reduce power consumption.
Open Phone Manager and touch remaining. You can:
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Optimize performance: Touch Optimize. Your phone will check for power consumption
problems and optimize performance. To further reduce power consumption, touch items need
to be optimized manually, and then select View or Optimize to adjust the power settings
manually.
Phone Manager
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