So far I'm less than impressed with the update. My phone seems to lag on everything I try to do from unlocking to writing a simple text message. These are some of the things I've noticed so far (about 1 week in since upgrade).
-- Serious lag when opening apps, closing apps, basically doing anything on the phone
--My email client (not gmail) routinely notifies me of new email when there is none. It also does not update in real time like it used to and I often have to hit the refresh icon to see if there is something new
--The battery life does not seem any better than previous and takes longer to charge. Yesterday I had an anomaly where my phone was at 79%, plugged in it, and 20 min later it said 100%. I unplugged and then very quickly the battery drained to 83%.
--I like the text notification on the lock screen, but the font is so big that I can't read more than a few words of the text. Can that be changed?
--I hate the new revised emoticons in the Samsung keyboard
--When I get a voicemail, the new voicemail icon stays in the notification bar until I physically delete the message. Even after I listen to it, it still shows as new. Anyone else have this?
--I don't stream video too often, but this week watching the World Cup was awful because it kept freezing. I don't know if it was purely network traffic or some KK glitch that someone else mentioned with Hulu and HBO.
That's about all I've noticed so far and unfortunately most are negative making me wish I wouldn't have upgraded. I've never done a factory reset, but I'm assuming that deletes all of your data. How hard is it to back up the phone and restore? I should probably do that anyway!
Kristi