A. 1. Disable battery optimization: Go to 'Settings' > 'Battery' > 'Battery optimization' and set YoHo to 'Not optimized' to prevent the system from killing the app. 2. Lock the app in recent apps: Open YoHo, then press the recent apps button and swipe down on the app to lock it in memory.

B. 3. Check for conflicting apps: Some apps may interfere with YoHo's performance; try disabling or uninstalling any recently installed apps.