El backup lo puedes hacer desde el telefono a la sd o desde el pccompanion al ordenador. Te guardarį los contactos, preferencias, imagenes, etc.
Esta informacion esta en la web de sonyericsson:
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To perform a backup using the Backup and Restore application:
- From the Home screen, find and tap Backup and restore.
- Tap Back up > Add new.
- Tap the text field and enter a name for your backup file. Tap Continue.
- Mark the categories that you want to backup.
- Tap Continue.
- The backup process starts. When complete, tap Continue.
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Saludos