Since updating the OS the past two times over WiFi my battery has been acting oddly. It will say it has 30% left then power down saying it has 0% left. Believes it has 0% for about 15 minutes (won't let me turn it on) then turns on saying it has 30% or more left.
When I put it on the charger it says I have about 10% more than that left.
Any ideas? I did a reset of all settings.
Also, it has stopped syncing my iCalendar to my Google calendar.