User manual

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 Clean Idle Apps·
Smart System Management
This is a new feature of ColorOS . The Smart System Management
would intelligently stop the apps which have been barely used for a
while, as a way to prolong battery usage.
Smart Memory Compression
This is another new feature of ColorOS. It works to detect inactive apps
and compress its memory to make space for other apps.
HeyTap Cloud
HeyTap Cloud Backup serves to back up your contacts, SMS, photos,
files.
Activate HeyTap Cloud

Go to "Settings" > "HeyTap Cloud".