Titanium Backup is a powerful tool for Android users with to back up apps, system data, and settings. Since development has slowed in recent years, it works best on older Android versions, but the core functionality remains solid for managing your device's data. Prerequisites
Tap the icon in the top right corner.
Wait for the process to finish; your backups are stored in the TitaniumBackup folder on your internal storage or SD card.
Your device must be rooted for Titanium Backup to function.
Enable this in "Developer Options" in your phone's settings.
You can turn your backups into a flashable .zip file to be installed via custom recovery (like TWRP).