your Google Account to automatically back up app data and settings including Wi-Fi passwords and files stored by certain apps.
HTC Sync Manager to import music, photos, and videos from
HTC U Ultra to your computer. You can also sync locally stored contacts and playlists between
HTC U Ultra and your computer.
HTC Sync Manager is a good alternative if you don't want to back up your accounts, settings, and other personal content to the cloud. You can use it to create backups of
HTC U Ultra on your computer.
If you want, you can separately back up your data or files.
Some apps allow you to back up data to the storage card—if it's used as removable storage—so you can easily restore them after a factory reset. Just make sure not to erase the storage card when you do a factory reset.
In certain apps, you may be able to use the phone storage for backing up and restoring app data. If an app is causing some problem and you need to clear its data to try resolving the problem, back up the app data to the phone storage first.