google analytics ios sdk V2.0 short session durations
Just found this answer from my friend
http://support.google.com/analytics/bin/answer.py?hl=en&answer=1144430&topic=1011345&ctx=topic
In my app I only have one view controller that uses [tracker trackView:@"my screen name"] and I have this stuck this in the AppDelegate.m for now as I hadn't got around to tracking views/screens yet. According to the linked material, the way GA calculates session duration is based on time between views. Since I only have one view defined (and not properly within the viewController), this may be the reason I'm getting so many 0-10sec sessions. Going to explore.
It might possible you are initiating a new session before tracking a event/pageview. Please Ensure that you are not starting new session everytime. Refer this linkhttps://developers.google.com/analytics/devguides/collection/ios/v3/sessions