User manual

Clean-up & Accelerate. Click Phone Manager on the Home screen, then click [Clean
Storage]. Scan and delete all kinds of junk files. You can also delete the app data and
other unnecessary files, such as photos, audio, videos, and documents.
5.4 Lock the running background apps
You may close the running background apps frequently to make your phone
perform steadily and faster. If you want some apps to be always connected and
reachable, do the following:
Lock an app. Click Menu button to reveal your open apps, then swipe an app down
to the bottom edge of the screen. Notice that a lock appears on the upper-left corner
of the app.
Repeat the action for other apps.