I have an LG P700.
Yesterday I tried to use LG PC Suite to back it up. PC Suite got stuck at some point of the process and asked me to disconnect the phone and restart it, in spite that the screen of the phone had a warning not to touch it. I rashly followed the PC Suite instructions and restarted the phone. After doing so, I found that no backup had been created and all the events in Google Calendar had disappeared. Everything else in the phone seems to be working fine. I was using the phone local calendar, and I didn't have it synchronized to the cloud.
About an hour before I started the PC Suite backup I set up the Backup & Reset options for my Google account (Settings -> Backup & Reset), so I understand that the phone started to back up itself automatically at that point. I don't know if this might help.
So, is there any way to recover my lost events? I'm really crossing my fingers here 'cause I lost around 400 - 500 events.