Enable Power Saving mode
Applicable products：
HUAWEI nova 9(dual sim card 8gb+256gb)，HUAWEI nova 8(dual sim card 8gb+128gb)
Applicable system:
EMUI 12.0
Applicable products：
Applicable system:
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| Enable Power Saving mode |
You are advised to enable Power Saving mode when the battery level is low but you cannot charge your phone straight away.
Go to (or Optimizer > 
) and enable Power Saving mode. After that, 
will be displayed in the status bar.
You can touch Learn more to view details about power saving measures.
Thanks for your feedback.