Settings > Battery > Low battery mode > off
Settings > Battery > Battery Usage > Find TrackView > Keep Freeze background apps and Auto optimize when abnormal behavior detected
Optional settings
Settings > Wi-Fi > Wi-Fi settings > Advanced settings > Keep Wi-Fi on during sleep > on
Settings > Notification and status bar > Notification manager > Find TrackView > Keep Allow notifications, Show on lock screen and Floating notifications on
Settings > Other settings > Security and privacy > Device administrators > Find TrackView > Activate
launched the TrackView in background> click the meun button on your phone > find the TrackView in multitasking slides > dropdown it until the lock icon appers