Backup and Restore Using the PC Suite.

The Nokia PC Suite allows you to back up the entire content of the phone's internal memory (the C: drive) to a PC file. The full backup file includes the following:

• Contacts
• Calendar items
• Documents such as notes, email messages, and MMS messages
• Images and other media files in the phone's Gallery
• Settings including GPRS access points, email, and other connection settings
• Personal preferences such as wallpaper, ring tones, and speed-dial shortcuts
• Applications including Symbian C++ and Java programs

I recommend doing the backup periodically. If you mess up and have to do a deep reset, you can locate the closest clean backup file and restore it to the phone via the PC Suite. The PC Suite puts your backup files into %SystemRoot%\Nokia\Phone Model\Backup (e.g., C:\Nokia\Nokia 3650\Backup for a typical backup for a Nokia 3650 phone).

The PC Suite also allows you to back up and restore a subset of data in the flash memory. You can choose any combination of the following four categories of data: contacts, calendar items, documents, and images.