What is default GMail setting for: number of days of data to synchronize? Gmail allows to limit from how many last days it will synchronize the messages. E.g. from one day, two, etc.

What is the default setting? I think this is phone independent, but I ask about Samsung Galaxy S, and SII.
This default depends on your Android version.  The default setting used to 4 days but with ICS (might be honeycomb, I can't comfirm) it was changed to 30 days.