I have a Samsung Moment, that is running the stock Android 2.1 system released by Sprint. I signed up for a Gmail account when I got the phone. I also run my own domain, and have just migrated my domain's email and calendar to Google Apps. I would like to set my phone up to sync everything from my Google Apps account rather than the random Gmail account I signed up for when I got the phone. Is there any way to achieve this without doing a Factory Data Reset? I am willing to do the Factory Data Reset if I have to, but if I need to go through that process, are there any procedures I should follow to backup important data before hand? Also, will the reset take me back to 1.5?