Huawei Honor 3C H30-U10 Quick Start - Manual (Page 15)

Phone Manager
Phone Manager supports system diagnosis and
optimization at the touch of a button. You can configure
your phone's power saving mode, manage application
permissions, clean up your storage, and turn on do not
disturb mode.
Touch to open Phone Manager.
8:08
Flick left
for more
functions
Touch to
scan