Create a contacts export file on your device. Save to your storage card, PC, flash drive, or upload to the Cloud for safekeeping.
Backup Apps and Data- MyBackup
Use MyBackup to save all of your Application data, Contacts, Calendar, Texts/MMS, Pictures, and more to your storage card or the cloud.
Backup Apps and Data- Titanium Backup
Use Titanium Backup to save all of your important App and System data.
Nandroid (Full System Backup)
Once your device is setup with apps installed and preferences configured, you should make a Nandroid backup. This preserves your current working system setup and allows you to return to it in case of device freeze-up or bootloop.
1. A Rooted Android device
2. A working ClockworkMod Recovery. In this case we use Bionic Bootstrap (specifically for the Droid Bionic only). More info about using the Recovery
Backup Android App Data
This is especially useful for saving game data so you don’t lose saved missions, progression, etc.